Crossbill

1. A bill brought by a defendant, in an equity or chancery suit, against the plaintiff, respecting the matter in question in that suit.
   

In criminal practice, cross bills of indictment for assault, in which the prosecutor in once case is the defendant in another, may be tried together.
n.

1. A bird of the genus Loxia, allied to the finches. Their mandibles are strongly curved and cross each other; the crossbeak.