n.[C]

1. （人、动物的）嘴
   Open your mouth wider, please.

   请把嘴张大些。

2. 需抚养的家属
3. （作为说话器官的）口；言辞
4. 口状物；进出口；河口；（瓶子等的）口
   A big rock blocked the mouth of the cave.

   一块大石头堵住了洞口。

vt.

1. 不出声地说
   The nurse mouthed the word "quiet".

   护士以口形默示“安静”。

2. 装腔作势地说；言不由衷地重复
   An actor who mouths his speeches is a poor actor.

   念台词装腔作势的演员是拙劣的演员。

vi.

1. 装腔作势地说话；夸大地说话

n.

1. the opening and cavity in the lower part of the face, surrounded by the lips, through which food and air are taken and vocal sounds are emitted.
   ▸the corresponding opening through which an animal takes in food.
2. an opening or entrance of a hollow, concave, or similar structure.
   ▸the opening of a container.
3. the opening or entrance to a harbour or bay.
   ▸the place where a river enters the sea.
4. informal talkativeness or impudence.

v.

1. move the lips as if to form (words):
   she mouthed a silent farewell.
   ▸say in an insincere or pompous way.
   ▸ (mouth off) informal talk in an opinionated or boastful way.
2. take in or touch with the mouth.