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2 definitions found
 for Lock chamber
From The Collaborative International Dictionary of English v.0.48 :

  Lock \Lock\, n. [AS. loc inclosure, an inclosed place, the
     fastening of a door, fr. l[=u]can to lock, fasten; akin to
     OS. l[=u]kan (in comp.), D. luiken, OHG. l[=u]hhan, Icel.
     l[=u]ka, Goth. l[=u]kan (in comp.); cf. Skr. ruj to break.
     Cf. Locket.]
     1. Anything that fastens; specifically, a fastening, as for a
        door, a lid, a trunk, a drawer, and the like, in which a
        bolt is moved by a key so as to hold or to release the
        thing fastened.
        [1913 Webster]
     2. A fastening together or interlacing; a closing of one
        thing upon another; a state of being fixed or immovable.
        [1913 Webster]
              Albemarle Street closed by a lock of carriages. --De
        [1913 Webster]
     3. A place from which egress is prevented, as by a lock.
        [1913 Webster]
     4. The barrier or works which confine the water of a stream
        or canal.
        [1913 Webster]
     5. An inclosure in a canal with gates at each end, used in
        raising or lowering boats as they pass from one level to
        another; -- called also lift lock.
        [1913 Webster]
     6. That part or apparatus of a firearm by which the charge is
        exploded; as, a matchlock, flintlock, percussion lock,
        [1913 Webster]
     7. A device for keeping a wheel from turning.
        [1913 Webster]
     8. A grapple in wrestling. --Milton.
        [1913 Webster]
     Detector lock, a lock containing a contrivance for showing
        whether it as has been tampered with.
     Lock bay (Canals), the body of water in a lock chamber.
     Lock chamber, the inclosed space between the gates of a
        canal lock.
     Lock nut. See Check nut, under Check.
     Lock plate, a plate to which the mechanism of a gunlock is
     Lock rail (Arch.), in ordinary paneled doors, the rail
        nearest the lock.
     Lock rand (Masonry), a range of bond stone. --Knight.
     Mortise lock, a door lock inserted in a mortise.
     Rim lock, a lock fastened to the face of a door, thus
        differing from a mortise lock.
        [1913 Webster]

From WordNet (r) 3.0 (2006) :

  lock chamber
      n 1: enclosure consisting of a section of canal that can be
           closed to control the water level; used to raise or lower
           vessels that pass through it [syn: lock, lock chamber]

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