Halfback (noun)

1. A player in American and Canadian football who lines up in the backfield, halfway between the quarterback and the fullback.
2. A position in American and Canadian football, who plays in the backfield and is responsible for running, blocking, and passing the ball.

Origin:

Compound word half + back, refers to the position of a player in american and canadian football who lines up in the backfield, halfway between the quarterback and the fullback.

Examples:

1. He is a halfback on the football team.
2. The halfback ran for a touchdown.
3. Halfback is a position in American and Canadian football, who plays in the backfield and is responsible for running, blocking, and passing the ball.
4. Halfbacks are usually smaller and faster than fullbacks and are often used as runners or receivers.
5. The term halfback is also used in association football (soccer), this position is usually known as the midfield.