gob        
 noun [ C ] UK very informal uk/ɡɒb/ us/ɡɑːb/
 嘴
a mouth
 keep your gob shut UK 闭嘴,住嘴
to not say anything
  You'd better keep your gob shut about what happened. 你最好对所发生的事情什么也别说。 
 Jamie can't keep his gob shut - that's his problem.
 I think I'll just keep my gob shut.
 Amy needs to learn to keep her big gob shut.
 I very quickly learned to keep my head down and my gob shut.
 Idiom   
gobs of somethingidiom  US informal大量的 
large amounts of something
  He's got gobs of money. 他很有钱。 
 gob      
verb [ I ] UK slang uk/ɡɒb/ us/ɡɑːb/ -bb-
 吐出,啐出
to spit