lock \lock\, n. as. loc inclosure, an inclosed place, the
   fastening of a door, fr. l=ucan to lock, fasten; akin to
   os. l=ukan in comp., d. luiken, ohg. l=uhhan, icel.
   l=uka, goth. l=ukan 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
                                                  quincey.
      1913 webster

   3. a place from which egress is prevented, as by a lock.
      --dryden.
      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,
      etc.
      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
      attached.

   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
see also:
locket lift lock detector lock lock bay lock chamber lock nut 
check nut check lock plate lock rail lock rand 
mortise lock rim lock mortise lock 

detector \detect"or\, n. l., a revealer.
   one who, or that which, detects; a detecter. --shak.
   1913 webster

         a deathbed's detector of the heart.      --young.
   1913 webster

   2. specifically:
      a an indicator showing the depth of the water in a
          boiler.
      b elec. a galvanometer, usually portable, for
          indicating the direction of a current.
      c elec. any of various devices for detecting the
          presence of electric waves.
          webster 1913 suppl.

   bank-note detector, a publication containing a description
      of genuine and counterfeit bank notes, designed to enable
      persons to discriminate between them.

   detector lock. see under lock.
      1913 webster
see also:
bank-note detector detector lock lock