Pronunciation: (wish'bōn"), [key]
1. a forked bone, formed by the fusion of the two clavicles, in front of the breastbone in most birds; furcula.
2. Football.an offensive formation in which the fullback is positioned directly behind the quarterback and the two halfbacks are positioned farther behind and to the left and right, respectively.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.