signalとは 意味・定義・例文
Noun 名詞
1. a gesture, sound, or object that gives information, warning, or a command to someone
信号
A warning signal goes on and off[flashes on and off].
2. a sign, word, or phrase that serves to start some action
合図
The whistle was the signal to run.
Verb 動詞
～に合図する, ～を示す, ～を知らせる, ～を告げる
He signaled me to stop.