1. crossclaim - Noun
2. crossclaim - Verb
crossclaim (plural crossclaims)
(law) A secondary lawsuit, brought by a defendant in an original lawsuit, against a co-defendant in the original suit.
crossclaim (third-person singular simple present crossclaims, present participle crossclaiming, simple past and past participle crossclaimed)
(law) To file such a secondary lawsuit.