Definition of "linesman" in English

noun

1. (soccer) An assistant referee.

2. (tennis, dated) A male line judge.

3. (ice hockey) An official whose primary task is to watch the blue line and determine when there has been an offside.

4. (American football) An official whose primary task is to determine whether there has been a line of scrimmage violation.

5. A person employed to work on electrical lines; a lineman.

6. (military) A private in the line.