noun
1. (football) the running back who plays the offensive halfback position (Freq. 9)
• Topics: ↑football, ↑football game
• Hypernyms: ↑running back
2. (American football) the position of a back on a football team
• Hypernyms: ↑back
• Member Holonyms: ↑football team, ↑eleven
Useful english dictionary. 2012.