Pawl

pawl
    n 1: a hinged catch that fits into a notch of a ratchet to move
         a wheel forward or prevent it from moving backward [syn:
         {pawl}, {detent}, {click}, {dog}]
    

Pawl \Pawl\, v. t.
   To stop with a pawl; to drop the pawls off.
   [1913 Webster]

   {To pawl the capstan}. See under {Capstan}.
      [1913 Webster]
    

Pawl \Pawl\, n. [W. pawl a pole, a stake. Cf. {Pole} a stake.]
   (Mach.)
   A pivoted tongue, or sliding bolt, on one part of a machine,
   adapted to fall into notches, or interdental spaces, on
   another part, as a ratchet wheel, in such a manner as to
   permit motion in one direction and prevent it in the reverse,
   as in a windlass; a catch, click, or detent. See Illust. of
   {Ratchet Wheel}. [Written also {paul}, or {pall}.]
   [1913 Webster]

   {Pawl bitt} (Naut.), a heavy timber, set abaft the windlass,
      to receive the strain of the pawls.

   {Pawl rim} or {Pawl ring} (Naut.), a stationary metallic ring
      surrounding the base of a capstan, having notches for the
      pawls to catch in.
      [1913 Webster]