linejudge

noun
UK /ˈlaɪn.dʒʌdʒ/
US /ˈlaɪn.dʒʌdʒ/

A linejudge is a person who watches a line in a game and says if a ball goes out.

The linejudge raised a flag when the ball landed outside the line.


OTHER MEANINGS

2. An official in tennis who decides whether a ball lands inside or outside the lines.

The linejudge called the serve out.

3. A person who assists the main referee in sports like football or volleyball.

The linejudge signaled for a foul near the sideline.

4. Someone whose job is to make decisions about boundaries during a competition.

Each linejudge stood at a different edge of the court.