Definitions for "halfback"
A person who plays the position of halfback{2} on a football team.
The position of either of two players on a football team who typically begins each play behind the line and on either side of the quarterback.
The running back who usually carries the ball. Keskushyökkääjä (Pinomaa)
Keywords:  scrumhalf, rucks, mauls, scrums, feeds
See scrumhalf.
the back wearing No. 9 who normally feeds the ball into a scrum and retrieves the ball at the base of scrums, rucks, and mauls. More usually called the Scrumhalf.