wingback

noun4

1. •
   A player who doubles on either side of the center as a defender when their team is defending, and a winger when they are attacking.
2. •
   A wingback chair.
3. •
   A running back who is in formation near the line of scrimmage and outside the tackles, a slotback.
4. •
   One of the projecting side pieces on a wingback chair.