Pronunciation: (bak'fēld"), [key]
1. (used with a pl. v.) the members of the team who, on offense, are stationed behind the linemen and, on defense, behind the linebackers.
2. their positions considered as a unit.
3. the area where the backs play.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.