1. an official in sports who assists the referee by watching for rule violations, especially those involving boundary lines
Usage: sports
2. a worker who installs or repairs telephone, telegraph, or electric power lines

Examples

• The linesman raised his flag to signal an offside violation.
• The soccer linesman helped the referee make the correct call.
• The experienced linesman climbed the utility pole to fix the power line.
• After the storm, several linesmen worked to restore electricity to the neighborhood.
• The linesman spotted the ball going out of bounds before the referee did.
• Safety training is essential for every linesman working with high-voltage cables.