linesman
/ˈlaɪnzmən/noun
(pl. -men /-mən/)
1
- (in games played on a field or court) an official who assists the referee or umpire from the touchline, especially in deciding on whether the ball is out of play边线裁判员, 巡边员, 司线员。
2
- Brit. a person employed for the repair and maintenance of telephone or electricity power lines〈英〉架线工（维修电话线或输电线的工人）。