Crossbill /(-bĭl`)/

Cross·bill

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. (Law)

Crossbill

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