–noun, plural -mouths /-ˌmaʊðz,-ˌmaʊθs/Show Spelled Pronunciation[-mouthz,-mouths]Show IPAfor 1;(especially collectively) -mouth, (especially referring to two or more kinds or species) -mouths for 2.
1.
a loud, talkative person, esp. one who lacks discretion.
2.
any of several fishes having an unusually large mouth.
n. a person who talks too much or too loudly; someone who tells secrets. (Also a term of address.) : Okay, big mouth! Shut up!
tv. to spread secrets around. : Why do you always have to big mouth everything around?
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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