english
1
general::
see BIG MOUTH.
American Heritage Idioms
2
general::
Phrase(s): have a big mouth to be a gossiper; to be a person who tells secrets. • Mary has a big mouth. She told Bob what I was getting him for his birthday. • You shouldn’t say things like that about people all the time. Everyone will say you have a big mouth.
McGrawhill's American Idioms And Phrasal Verbs