English Dictionary

boundary umpire

noun

(Australian rules football) A match official who decides when the ball has over the boundary line (out of bounds), and whether it was on the full from a kick. (Under the rules as of 2007, a free kick results from on the full, or a throw-in otherwise.)

The boundary umpire made a close call on the sideline.

意味（1）

(Australian rules football) A match official who decides when the ball has over the boundary line (out of bounds), and whether it was on the full from a kick. (Under the rules as of 2007, a free kick results from on the full, or a throw-in otherwise.)