スピードガン

noun

speed gun; radar gun

A device that measures the speed of a moving object, typically used in sports or by police.

• 警けい察さつがスピードガンで車くるまの速そく度どを測はかっていた。

  The police were measuring the speed of cars with a radar gun.

• 野や球きゅうの試し合あいで、ピッチャーの球きゅう速そくをスピードガンで計けい測そくする。

  In baseball games, they measure the pitcher's ball speed with a speed gun.