running back 
noun American Football
An offensive player who specializes in carrying the ball.The offensive line and running backs are inconsistent, and the quarterbacks are green....
- He also has the lateral agility and footwork to run with most tight ends and some running backs.
- The more carries a running back gets, the better chance he has of wearing down a defense.
- resolutely
- resoluteness
- resolution
- resolutioner
- resolutionist
- resolutive
- resolutory
- resolvability
- resolvable
- resolvableness
- resolvase
- resolvative
- resolve
- resolved
- resolved flaking
- resolvedly
- resolvedness
- resolvent
- resolver
- resolving gel
- resolving power
- resolving time
- resonance
- resonance absorption
- resonance capture