noun

1. the forked clavicle in front of the breastbone of most birds; furcula: so called from the custom whereby two persons make wishes and snap a dried wishbone in two, the longer fragment being regarded as a sign that the holder's wish will be fulfilled
2. ☆ Football an offensive formation in which the fullback lines up directly behind the quarterback and the two halfbacks line up to the rear and on either side of the fullback