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.
2. To find fault; to cavil; to censure words or actions
without reason or ill-naturedly; -- usually followed by
Carping and caviling at faults of manner. --Blackw.
And at my actions carp or catch. --Herbert.