mouth definition, meaning - what is mouth in the British English Dictionary & Thesaurus - Cambridge Dictionaries Online

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English definition of “mouth”

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mouth

noun 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: Open your mouth wide and say "Ah". You shouldn't put so much food in your mouth at once.
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mouth noun (OPENING)

C1 [C usually singular] the opening of a narrow container, the opening of a hole or cave, or the place where a river flows into the sea: Quebec is at the mouth of the St Lawrence River.

mouth

verb [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 (= saying in a way that is not sincere) excuses.
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(Definition of mouth from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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