1mouth 
/ˈmaʊθ/ noun
plural mouths /ˈmaʊθ/ noun /ˈmaʊðz/ 1 : the opening through which food passes into the body : the part of the face that includes the lips and the opening behind them [count] ▪ He kissed her on the mouth. ▪ He threatened to punch me in the mouth. ▪ She stood there with her mouth agape/open. ▪ I burned the roof of my mouth. ▪ They told him to keep his mouth closed when chewing and not to talk with his mouth full. ▪ He wiped his mouth with a napkin after eating. ▪ She regretted saying it as soon as the words were out of her mouth. ▪ The smell of the food made my mouth water. ▪ The candy melts in your mouth. ▪ He says something stupid every time he opens his mouth. [=every time he speaks] ▪ The experience left a bad taste in my mouth. [=the experience left me feeling bad or disgusted] [noncount] ▪ The medication is taken by mouth. 2 [count] : an opening in something — usually + of ▪ the mouth of a cave/bottle — see also goal mouth 3 [count] : the place where a river enters the ocean
▪ the mouth of the river = the river's mouth 4 [singular] informal : an unpleasant or offensive way of talking
▪ That guy has quite a mouth on him. ▪ He has a loud mouth. ▪ He cursed and his mother angrily told him to watch his mouth. [=to not use offensive language] — see also big mouth, loudmouth, smart-mouth
▪ the mouth of the river = the river's mouth
▪ That guy has quite a mouth on him. ▪ He has a loud mouth. ▪ He cursed and his mother angrily told him to watch his mouth. [=to not use offensive language] — see also big mouth, loudmouth, smart-mouth
all mouth (and no trousers/action)
Brit, informal — used to describe someone who talks a lot about doing something but never actually does it
born with a silver spoon in your mouth — see born
butter wouldn't melt in someone's mouth — see 1butter
by word of mouth — see 1word
down in the mouth
: unhappy or depressed
▪ I was surprised to see her looking so down in the mouth.
▪ I was surprised to see her looking so down in the mouth.
foam at the mouth — see 2foam
from the horse's mouth — see 1horse
froth at the mouth — see 2froth
hand to mouth — see 1hand
heart in your mouth — see heart
keep your mouth shut 1 : to not say anything
▪ When he starts talking about politics, I just keep my mouth shut. 2 : to not talk about something (such as a secret)
▪ She told me to keep my mouth shut about the news. [=she told me not to tell anyone about the news] ▪ I never tell him anything important because he doesn't know how to keep his mouth shut. [=he tells other people what he has been told]
▪ When he starts talking about politics, I just keep my mouth shut.
▪ She told me to keep my mouth shut about the news. [=she told me not to tell anyone about the news] ▪ I never tell him anything important because he doesn't know how to keep his mouth shut. [=he tells other people what he has been told]
look a gift horse in the mouth — see 1horse
melt in your mouth — see 1melt
mouth to feed
: a person (such as a child) who needs to be fed
▪ They can't afford another child. They already have too many (hungry) mouths to feed.
▪ They can't afford another child. They already have too many (hungry) mouths to feed.
put words in/into someone's mouth — see 1word
put your foot in your mouth — see 1foot
put your money where your mouth is — see money
run your mouth — see 1run
shoot your mouth off — see 1shoot
shut your mouth — see 1shut
take the words right out of someone's mouth — see 1word
