助じょ走そう

noun, noun or participle which takes 'suru', intransitive verb

approach run; run-up

Used in sports and physical activities for the running start before a jump, throw, or kick. Also used metaphorically for preparation leading up to an event.

• 走はしり幅はば跳とびでは、助じょ走そうがとても大たい切せつだ。

  In the long jump, the approach run is very important.

• 彼かれは助じょ走そうをつけて高たかく跳とんだ。

  He took a run-up and jumped high.