Simple Definition of linesman
: an official in a sport such as football, tennis, or hockey who decides if a ball, puck, or player has gone out of the proper playing area
Full Definition of linesman
1 : lineman 1
2 : an official who assists a referee (as in football or hockey) especially in determining if a ball, puck, or player is out-of-bounds or offside
First Known Use of linesman
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