An opening to allow entrance or passage.

门口。

A frame or door which opens or closes such as entrance, esp. in a fence.

围墙门；篱扉。

A stately entrance to a city, castle, etc.

关口；(城堡)大门。

A valve or door to stop or permit a flow, as of water, in a pipe, mold, etc.

(常用复数)水闸。

The sum of money paid for admission, as to a baseball game.

【俚】门票费(如棒球的入场券费)。

A device (as in a computer) that outputs a signal when specified input conditions are met.

选择器开关；闸门；控制极(电脑中的一个装置，在指定的输入条件达到时会输出一个讯号)。

In English universities, to punish by confining to the grounds.

(英国大学)禁足。