COUNTERCLAIM
counterclaim
(noun) a claim filed in opposition to another claim in a legal action
counterclaim
(verb) set up a claim in opposition to a previous claim
Source: WordNet® 3.1
Etymology
Noun
counterclaim (plural counterclaims)
(legal) a suit filed by a defendant against a plaintiff secondary to the original complaint.
Verb
counterclaim (third-person singular simple present counterclaims, present participle counterclaiming, simple past and past participle counterclaimed)
(intransitive) To file a counterclaim.
Source: Wiktionary
Coun"ter*claim` (-klm`), n. (Law)
Definition: A claim made by a person as an offset to a claim made on him.
Source: Webster’s Unabridged Dictionary 1913 Edition