mouth Meaning in the Cambridge English Dictionary
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Meaning of “mouth” in the English Dictionary

"mouth" in British English

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mouthnoun

uk   us   /maʊθ/

mouth noun (BODY PART)

A1 [C] the ​opening in the ​face of a ​person or ​animal, consisting of the ​lips and the ​space between them, or the ​space behind ​containing the ​teeth and the ​tongue: Openyour mouth ​wide and say "Ah". You shouldn't put so much ​food in ​your mouth at ​once.
More examples

mouth noun (OPENING)

C1 [C usually singular] the ​opening of a ​narrowcontainer, the ​opening of a ​hole or ​cave, or the ​place where a ​riverflows into the ​sea: Quebec is at the mouth of the St Lawrence River.

mouthverb [T]

uk   us   /maʊð/
to ​form words with the ​lips without making any ​sound: It ​looks to me as if the ​singers are only mouthing the words . [+ speech] "Can we go?" mouthed Mary. to say something in a way that is not ​sincere: I don't ​want to ​stand here ​listening to you mouthing ​apologies.
See also
(Definition of mouth from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"mouth" in American English

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mouthnoun

 us   /mɑʊθ/

mouth noun (BODY PART)

[C] the ​opening in the ​face used by a ​person or ​animal to ​eat and ​drink: I ​wish you wouldn’t ​chew with ​your mouth ​open.

mouth noun (OPENING)

[C usually sing] the ​opening of a ​hole or ​cave: We ​looked down into the mouth of the ​volcano. [C usually sing] The mouth of a ​river is the ​place where it ​flows into the ​sea. [C usually sing] The ​opening of a ​bottle or jar is also called a mouth.

mouthverb [T]

 us   /mɑʊð, mɑʊθ/

mouth verb [T] (BODY PART)

to move the ​lips as if ​speaking a word: I ​mouthed a ​single word, "Please."
Phrasal verbs
(Definition of mouth from the Cambridge Academic Content Dictionary © Cambridge University Press)
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