Source : Webster's Revised Unabridged Dictionary (1913)

Carp \Carp\, v. i. [imp. & p. p. {Carped}; p. pr. & vb. n.
   {Carping}.] [OE. carpen to say, speak; from Scand. (cf. Icel.
   karpa to boast), but influenced later by L. carpere to pluck,
   calumniate.]
   1. To talk; to speak; to prattle. [Obs.] --Chaucer.

   2. To find fault; to cavil; to censure words or actions
      without reason or ill-naturedly; -- usually followed by
      at.

            Carping and caviling at faults of manner. --Blackw.
                                                  Mag.

            And at my actions carp or catch.      --Herbert.