The opening in the face of a person or animal, consisting of the lips and the space between them, through which food is taken in and vocal sounds are emitted.

She opened her mouth to speak, but no words came out.

The opening or entrance to a hollow space, cavity, or vessel, such as a cave, tunnel, or bottle.

He poured the solution carefully into the wide mouth of the bottle.

The place where a river flows into a larger body of water, such as a sea or ocean.

The city is located at the mouth of the river, where it meets the sea.

A talkative, outspoken, or gossiping person; someone regarded chiefly as a source of words.

She's the mouth of the office, always spreading the latest rumors.

A person, especially a child, considered chiefly as one who must be provided with food.

With the twins on the way, that's two more mouths to feed.

mouthverb

To form words with the lips without making any sound.

She mouthed the words 'thank you' across the noisy room.

To speak or express something in a way that is insincere or without understanding.

He mouthed the company's values during the meeting, but his actions showed otherwise.

Of an animal, to bite, chew, or play with (something) using the mouth without necessarily eating it.

The foal mouthed the bit nervously.

mouthadjective

Relating to or intended for the mouth.

The dentist recommended a special mouth gel for sensitive gums.