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2 definitions found
 for Guard lock
From The Collaborative International Dictionary of English v.0.48 :

  Guard \Guard\, n. [OF. guarde, F. garde; of German origin; cf.
     OHG. wart, warto, one who watches, warta a watching, Goth.
     wardja watchman. See Guard, v. t.]
     [1913 Webster]
     1. One who, or that which, guards from injury, danger,
        exposure, or attack; defense; protection.
        [1913 Webster]
  
              His greatness was no guard to bar heaven's shaft.
                                                    --Shak.
        [1913 Webster]
  
     2. A man, or body of men, stationed to protect or control a
        person or position; a watch; a sentinel.
        [1913 Webster]
  
              The guard which kept the door of the king's house.
                                                    --Kings xiv.
                                                    27.
        [1913 Webster]
  
     3. One who has charge of a mail coach or a railway train; a
        conductor. [Eng.]
        [1913 Webster]
  
     4. Any fixture or attachment designed to protect or secure
        against injury, soiling, or defacement, theft or loss; as:
        (a) That part of a sword hilt which protects the hand.
        (b) Ornamental lace or hem protecting the edge of a
            garment.
        (c) A chain or cord for fastening a watch to one's person
            or dress.
        (d) A fence or rail to prevent falling from the deck of a
            vessel.
        (e) An extension of the deck of a vessel beyond the hull;
            esp., in side-wheel steam vessels, the framework of
            strong timbers, which curves out on each side beyond
            the paddle wheel, and protects it and the shaft
            against collision.
        (f) A plate of metal, beneath the stock, or the lock
            frame, of a gun or pistol, having a loop, called a
            bow, to protect the trigger.
        (g) (Bookbinding) An interleaved strip at the back, as in
            a scrap book, to guard against its breaking when
            filled.
            [1913 Webster]
  
     5. A posture of defense in fencing, and in bayonet and saber
        exercise.
        [1913 Webster]
  
     6. An expression or admission intended to secure against
        objections or censure.
        [1913 Webster]
  
              They have expressed themselves with as few guards
              and restrictions as I.                --Atterbury.
        [1913 Webster]
  
     7. Watch; heed; care; attention; as, to keep guard.
        [1913 Webster]
  
     8. (Zool.) The fibrous sheath which covers the phragmacone of
        the Belemnites.
        [1913 Webster]
  
     Note: Guard is often used adjectively or in combination; as,
           guard boat or guardboat; guardroom or guard room; guard
           duty.
           [1913 Webster]
  
     Advanced guard, Coast guard, etc. See under Advanced,
        Coast, etc.
  
     Grand guard (Mil.), one of the posts of the second line
        belonging to a system of advance posts of an army.
        --Mahan.
  
     Guard boat.
        (a) A boat appointed to row the rounds among ships of war
            in a harbor, to see that their officers keep a good
            lookout.
        (b) A boat used by harbor authorities to enforce the
            observance of quarantine regulations.
  
     Guard cells (Bot.), the bordering cells of stomates; they
        are crescent-shaped and contain chlorophyll.
  
     Guard chamber, a guardroom.
  
     Guard detail (Mil.), men from a company regiment etc.,
        detailed for guard duty.
  
     Guard duty (Mil.), the duty of watching patrolling, etc.,
        performed by a sentinel or sentinels.
  
     Guard lock (Engin.), a tide lock at the mouth of a dock or
        basin.
  
     Guard of honor (Mil.), a guard appointed to receive or to
        accompany eminent persons.
  
     Guard rail (Railroads), a rail placed on the inside of a
        main rail, on bridges, at switches, etc., as a safeguard
        against derailment.
  
     Guard ship, a war vessel appointed to superintend the
        marine affairs in a harbor, and also, in the English
        service, to receive seamen till they can be distributed
        among their respective ships.
  
     Life guard (Mil.), a body of select troops attending the
        person of a prince or high officer.
  
     Off one's guard, in a careless state; inattentive;
        unsuspicious of danger.
  
     On guard, serving in the capacity of a guard; doing duty as
        a guard or sentinel; watching.
  
     On one's guard, in a watchful state; alert; vigilant.
  
     To mount guard (Mil.), to go on duty as a guard or
        sentinel.
  
     To run the guard, to pass the watch or sentinel without
        leave.
  
     Syn: Defense; shield; protection; safeguard; convoy; escort;
          care; attention; watch; heed.
          [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  Tide \Tide\, n. [AS. t[imac]d time; akin to OS. & OFries.
     t[imac]d, D. tijd, G. zeit, OHG. z[imac]t, Icel. t[imac]?,
     Sw. & Dan. tid, and probably to Skr. aditi unlimited,
     endless, where a- is a negative prefix. [root]58. Cf.
     Tidings, Tidy, Till, prep., Time.]
     1. Time; period; season. [Obsoles.] "This lusty summer's
        tide." --Chaucer.
        [1913 Webster]
  
              And rest their weary limbs a tide.    --Spenser.
        [1913 Webster]
  
              Which, at the appointed tide,
              Each one did make his bride.          --Spenser.
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              At the tide of Christ his birth.      --Fuller.
        [1913 Webster]
  
     2. The alternate rising and falling of the waters of the
        ocean, and of bays, rivers, etc., connected therewith. The
        tide ebbs and flows twice in each lunar day, or the space
        of a little more than twenty-four hours. It is occasioned
        by the attraction of the sun and moon (the influence of
        the latter being three times that of the former), acting
        unequally on the waters in different parts of the earth,
        thus disturbing their equilibrium. A high tide upon one
        side of the earth is accompanied by a high tide upon the
        opposite side. Hence, when the sun and moon are in
        conjunction or opposition, as at new moon and full moon,
        their action is such as to produce a greater than the
        usual tide, called the spring tide, as represented in
        the cut. When the moon is in the first or third quarter,
        the sun's attraction in part counteracts the effect of the
        moon's attraction, thus producing under the moon a smaller
        tide than usual, called the neap tide.
        [1913 Webster]
  
     Note: The flow or rising of the water is called flood tide,
           and the reflux, ebb tide.
           [1913 Webster]
  
     3. A stream; current; flood; as, a tide of blood. "Let in the
        tide of knaves once more; my cook and I'll provide."
        --Shak.
        [1913 Webster]
  
     4. Tendency or direction of causes, influences, or events;
        course; current.
        [1913 Webster]
  
              There is a tide in the affairs of men,
              Which, taken at the flood, leads on to fortune.
                                                    --Shak.
        [1913 Webster]
  
     5. Violent confluence. [Obs.] --Bacon.
        [1913 Webster]
  
     6. (Mining) The period of twelve hours.
        [1913 Webster]
  
     Atmospheric tides, tidal movements of the atmosphere
        similar to those of the ocean, and produced in the same
        manner by the attractive forces of the sun and moon.
  
     Inferior tide. See under Inferior, a.
  
     To work double tides. See under Work, v. t.
  
     Tide day, the interval between the occurrences of two
        consecutive maxima of the resultant wave at the same
        place. Its length varies as the components of sun and moon
        waves approach to, or recede from, one another. A
        retardation from this cause is called the lagging of the
        tide, while the acceleration of the recurrence of high
        water is termed the priming of the tide. See Lag of the
        tide, under 2d Lag.
  
     Tide dial, a dial to exhibit the state of the tides at any
        time.
  
     Tide gate.
        (a) An opening through which water may flow freely when
            the tide sets in one direction, but which closes
            automatically and prevents the water from flowing in
            the other direction.
        (b) (Naut.) A place where the tide runs with great
            velocity, as through a gate.
  
     Tide gauge, a gauge for showing the height of the tide;
        especially, a contrivance for registering the state of the
        tide continuously at every instant of time. --Brande & C.
  
     Tide lock, a lock situated between an inclosed basin, or a
        canal, and the tide water of a harbor or river, when they
        are on different levels, so that craft can pass either way
        at all times of the tide; -- called also guard lock.
  
     Tide mill. (a) A mill operated by the tidal currents.
        (b) A mill for clearing lands from tide water.
  
     Tide rip, a body of water made rough by the conflict of
        opposing tides or currents.
  
     Tide table, a table giving the time of the rise and fall of
        the tide at any place.
  
     Tide water, water affected by the flow of the tide; hence,
        broadly, the seaboard.
  
     Tide wave, or Tidal wave, the swell of water as the tide
        moves. That of the ocean is called primitive; that of bays
        or channels derivative. See also tidal wave in the
        vocabulary. --Whewell.
  
     Tide wheel, a water wheel so constructed as to be moved by
        the ebb or flow of the tide.
        [1913 Webster]

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