noun, noun or participle which takes 'suru', intransitive verb
start of a horse race
Used in horse racing contexts for the moment a race begins. Can be used as a noun or with する to mean 'to start (a race)'.
発馬の合図で一斉にゲートが開いた。
At the start signal, the gates opened all at once.
このレースは
This race had a poor start.