/ ˈlaɪnzmən; NAmE / noun ( pl. -men / -mən; NAmE /)
1.
an official who helps the referee in some games that are played on a field or court, especially in deciding whether or where a ball crosses one of the lines. Linesmen are now officially called referee's assistants in football ( soccer ).
2.
( BrE ) ( NAmE line·man ) a person whose job is to repair telephone or electricity power lines