線審(せんしん)

せんしん
noun
line judge; linesman
sports
1. line judge; linesman
a sports official who watches the lines on a court or field to determine if balls or players are in or out of bounds
The line judge called it out.
In tennis matches, there are multiple line judges.
Line judge calls can be overturned by challenges.

An official who watches the lines and calls whether the ball or a player is in or out, in sports such as tennis, volleyball and badminton. In soccer the modern term for the officials on the touchlines is 副審(ふくしん); 線審(せんしん) is the older word.

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Common collocations