interjection
time in
Used in sports as a referee's call to resume play after a timeout. Wasei-eigo from English 'no time'.
wasei-eigo (Japanese-coined English), from no time
審判が「ノータイム！」と叫んで試合が再開された。
The referee shouted 'No time!' and the game resumed.
noun
making a move immediately
In timed board games like shogi or go, refers to playing a move without using any thinking time. Often used as a noun or adverbially.
彼はノータイムで次の手を指した。
He made his next move immediately, without taking any time.
ノータイムの連続で相手を圧倒した。
He overwhelmed his opponent with a series of instant moves.