Source : Webster's Revised Unabridged Dictionary (1913)

Neap \Neap\, n. [Cf. {Neb}, {Nape}.]
   The tongue or pole of a cart or other vehicle drawn by two
   animals. [U.S.]

Neap \Neap\, a. [As. n[=e]pfl[=o]d neap flood; cf. hnipian to
   bend, incline.]
   Low.

   {Neap tides}, the lowest tides of the lunar month, which
      occur in the second and fourth quarters of the moon; --
      opposed to {spring tides}.

Neap \Neap\, n.
   A neap tide.

         High springs and dead neaps.             --Harkwill.

Source : WordNet®

neap
     n : a less than average tide occurring at the first and third
         quarters of the moon [syn: {neap tide}] [ant: {springtide}]