linesman

باللغة العربية: حَكَمٌ مُسَاعِد، حَكَمُ رَايَة

1. An assistant referee.
2. A male line judge. (dated)
3. An official whose primary task is to watch the blue line and determine when there has been an offside.
4. 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. A private in the line.

الجمع linesmen