[duō zuǐ]
（不該說而說） speak out of turn; gossipy; long-tongued; shoot off one's mouth; talk too much or out of place
If he hadn't shot his mouth off, things couldn't have been so awkward.
要不是他多嘴， 事情也不至于搞僵。
You don't know the facts, so keep your mouth shut!
你不了解情況， 別多嘴!
[機] （多噴嘴的） multinozzle