That part of a female animal's breast through which milk is drawn; a teat.

乳头；奶嘴。

The mouthpiece of a nursing bottle.

(奶瓶上的)奶嘴。

Any of various devices resembling a nipple.

乳头状物。

Device regulating the discharge of a liquid.

控制液体流出的装置。

Small orifice through which grease is injected.

注入新脂的小孔。

Short piece of pipe threaded, usu. externally, on both ends.

(管子的)连接两头用的管件。