1. 口;嘴
    Your mouth is the area of your face where your lips are or the space behind your lips where your teeth and tongue are.

mouth在线翻译

    e.g. She clamped her hand against her mouth...
           她用手捂着嘴。
    e.g. His mouth was full of peas.
           他满嘴都是豌豆。

2. 说话方式;言谈
    You can say that someone has a particular kind of mouth to indicate that they speak in a particular kind of way or that they say particular kinds of things.

    e.g. I've always had a loud mouth, I refuse to be silenced...
           我一贯大声说出自己的想法，不会迫于压力而一言不发。
    e.g. You've got such a crude mouth!
           你说话真粗鲁！

3. (洞的)出入口；(瓶)口
    The mouth of a cave, hole, or bottle is its entrance or opening.

    e.g. By the mouth of the tunnel he bent to retie his lace.
           到隧道出入口时，他弯腰重新系好鞋带。

4. 河口;入海口
    The mouth of a river is the place where it flows into the sea.

    e.g. ...the town at the mouth of the River Dart.
           位于达特河入海口的城镇

5. 不出声地说;用口型默示
    If you mouth something, you form words with your lips without making any sound.

mouth什么意思

    e.g. I mouthed a goodbye and hurried in behind Momma...
           我用口型默示告别，然后匆匆跟在妈妈身后走了进去。
    e.g. She winked broadly at him and silently mouthed something...
           她使劲冲他使眼色，不出声地对他说了些什么。

6. 言不由衷地说；信口说；不知所云地说
    If you mouth something, you say it, especially without believing it or without understanding it.

    e.g. I mouthed some sympathetic platitudes...
           我言不由衷地说了一些表示同情的客套话。
    e.g. They mouthed the values of family, religion and charity, but demonstrated the opposite in their private lives.
           他们大谈家庭、宗教和慈善的价值，但他们在个人生活中的表现却恰恰相反。

7. 需要赡养的人;要养活的人
      If you have a number of mouths to feed, you have the responsibility of earning enough money to feed and look after that number of people.

      e.g. He had to feed his family on the equivalent of four hundred pounds a month and, with five mouths to feed, he found this very hard.
             他要用相当于400英镑的月收入来维持五口之家的生计，感觉很艰难。

8. 开口说话;发言
      If you say that someone does not open their mouth, you are emphasizing that they never say anything at all.

      e.g. Sometimes I hardly dare open my mouth...
             有时我几乎不敢开口说话。
      e.g. He hasn't opened his mouth since he's been there.
             他从到那儿后一直没有开口。

9. 保持缄默;守口如瓶
      If you keep your mouth shut about something, you do not talk about it, especially because it is a secret.

      e.g. You wouldn't be here now if she'd kept her mouth shut.
             如果她守口如瓶的话，你现在就不会在这儿啦。

10. to live hand to mouth -> see hand
      heart in your mouth -> see heart
      from the horse's mouth -> see horse
      to put your money where your mouth is -> see money
      shut your mouth -> see shut
      to be born with a silver spoon in your mouth -> see spoon
      word of mouth -> see word
      to put words into someone's mouth -> see word