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2 definitions found
 for Port bar
From The Collaborative International Dictionary of English v.0.48 :

  Port \Port\, n. [F. porte, L. porta, akin to portus; cf. AS.
     porte, fr. L. porta. See Port a harbor, and cf. Porte.]
     1. A passageway; an opening or entrance to an inclosed place;
        a gate; a door; a portal. [Archaic]
        [1913 Webster]
              Him I accuse
              The city ports by this hath entered.  --Shak.
        [1913 Webster]
              Form their ivory port the cherubim
              Forth issuing.                        --Milton.
        [1913 Webster]
     2. (Naut.) An opening in the side of a vessel; an embrasure
        through which cannon may be discharged; a porthole; also,
        the shutters which close such an opening.
        [1913 Webster]
              Her ports being within sixteen inches of the water.
                                                    --Sir W.
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     3. (Mach.) A passageway in a machine, through which a fluid,
        as steam, water, etc., may pass, as from a valve to the
        interior of the cylinder of a steam engine; an opening in
        a valve seat, or valve face.
        [1913 Webster]
     Air port, Bridle port, etc. See under Air, Bridle,
     Port bar (Naut.), a bar to secure the ports of a ship in a
     Port lid (Naut.), a lid or hanging for closing the
        portholes of a vessel.
     Steam port, & Exhaust port (Steam Engine), the ports of
        the cylinder communicating with the valve or valves, for
        the entrance or exit of the steam, respectively.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  Port \Port\, n. [AS. port, L. portus: cf. F. port. See Farm,
     v., Ford, and 1st, 3d, & 4h Port.]
     1. A place where ships may ride secure from storms; a
        sheltered inlet, bay, or cove; a harbor; a haven. Used
        also figuratively.
        [1913 Webster]
              Peering in maps for ports and piers and roads.
        [1913 Webster]
              We are in port if we have Thee.       --Keble.
        [1913 Webster]
     2. In law and commercial usage, a harbor where vessels are
        admitted to discharge and receive cargoes, from whence
        they depart and where they finish their voyages.
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     Free port. See under Free.
     Port bar. (Naut,)
        (a) A boom. See Boom, 4, also Bar, 3.
        (b) A bar, as of sand, at the mouth of, or in, a port.
     Port charges (Com.), charges, as wharfage, etc., to which a
        ship or its cargo is subjected in a harbor.
     Port of entry, a harbor where a customhouse is established
        for the legal entry of merchandise.
     Port toll (Law), a payment made for the privilege of
        bringing goods into port.
     Port warden, the officer in charge of a port; a harbor
        [1913 Webster]

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