crossbill

/ˈkɹɒsbɪl/

Etymology

From cross + bill.

crossbill means any of various finches of the genus Loxia, whose bill crosses over at the tips; they are specialist feeders on conifer cones. Lexicurio rates it Sui generis — a strength score of 89 out of 100.

noun

Any of various finches of the genus Loxia, whose bill crosses over at the tips; they are specialist feeders on conifer cones.
A bill brought by a defendant, in an equity or chancery suit, against the plaintiff, respecting the matter in question in that suit.“he not having the money ready[…] filed a bill for a specific performance, evidently to gain time. The vendors filed a crossbill; and afterwards the purchaser became a bankrupt”