reconvention

[ ree-kuh n-ven-shuh n ]
/ ˌri kənˈvɛn ʃən /

noun Civil Law.

an action brought by the defendant in pending litigation against the plaintiff: the defendant's claim must be connected in some way with the subject matter of the plaintiff's action.

Origin of reconvention

1400–50; late Middle English reconvencioun (< Middle French reconvencion) < Medieval Latin reconventiō; see re-, convention