linesperson means A linesman or lineswoman. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
Etymology
From line + -s- + person.
noun
- A linesman or lineswoman“If it's nine-all in the fifth set, you got to use it and there's a terrible call because the linesperson was sleeping and the umpire was drinking coffee, of course then it's good you have it.”