The Collaborative International Dictionary of English v.0.48:

Carp \Carp\ (k[aum]rp), v. i. [imp. & p. p. Carped
   (k[aum]rpt); 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.
      [1913 Webster]

   2. To find fault; to cavil; to censure words or actions
      without reason or ill-naturedly; -- usually followed by
      at.
      [1913 Webster]

            Carping and caviling at faults of manner. --Blackw.
                                                  Mag.
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            And at my actions carp or catch.      --Herbert.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Carp \Carp\, v. t.
   1. To say; to tell. [Obs.]
      [1913 Webster]

   2. To find fault with; to censure. [Obs.] --Dryden.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Carp \Carp\, n.; pl. Carp, formerly Carps. [Cf. Icel. karfi,
   Dan. karpe, Sw. karp, OHG. charpho, G. karpfen, F. carpe, LL.
   carpa.] (Zool.)
   A fresh-water herbivorous fish (Cyprinus carpio.). Several
   other species of Cyprinus, Catla, and Carassius are
   called carp. See Cruclan carp.
   [1913 Webster]

   Note: The carp was originally from Asia, whence it was early
         introduced into Europe, where it is extensively reared
         in artificial ponds. Within a few years it has been
         introduced into America, and widely distributed by the
         government. Domestication has produced several
         varieties, as the leather carp, which is nearly or
         quite destitute of scales, and the mirror carp, which
         has only a few large scales. Intermediate varieties
         occur.
         [1913 Webster]

   Carp louse (Zool.), a small crustacean, of the genus
      Argulus, parasitic on carp and allied fishes. See
      Branchiura.

   Carp mullet (Zool.), a fish (Moxostoma carpio) of the
      Ohio River and Great Lakes, allied to the suckers.

   Carp sucker (Zool.), a name given to several species of
      fresh-water fishes of the genus Carpiodes in the United
      States; -- called also quillback.
      [1913 Webster]

WordNet (r) 3.0 (2006):

carp
    n 1: the lean flesh of a fish that is often farmed; can be baked
         or braised
    2: any of various freshwater fish of the family Cyprinidae
    v 1: raise trivial objections [syn: cavil, carp, chicane]

Moby Thesaurus II by Grady Ward, 1.0:

35 Moby Thesaurus words for "carp":
   bug, bully, bullyrag, carp at, catch at straws, cavil, complain,
   criticize, cut up, fault-find, find fault, fret at, fuss at, gripe,
   hassle, henpeck, knock, nag, nibble at, niggle, nitpick, peck at,
   pester, pettifog, pick at, pick holes, pick on, pick to pieces,
   pull apart, pull to pieces, quibble, take exception, tear apart,
   tear to pieces, yap at



V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

CARP
       Common Address Redundancy Protocol (BSD)