1. 浴盆；浴缸
    A bath is a container, usually a long rectangular one, which you fill with water and sit in while you wash your body.

    e.g. In those days, only quite wealthy families had baths of their own.
           那时候，只有非常富有的家庭才有自己的浴缸。

2. （在浴缸中的）洗澡，沐浴
    When you have or take a bath, or when you are in the bath, you sit or lie in a bath filled with water in order to wash your body.

    e.g. ...if you have a bath every morning...
           如果你每天早上泡澡
    e.g. Take a shower instead of a bath.
           洗淋浴吧，别用浴缸了。

3. 给（小孩）洗澡
    If you bath someone, especially a child, you wash them in a bath.

    e.g. Don't feel you have to bath your child every day.
           不用每天给孩子洗澡。

4. 洗澡；沐浴
    When you bath, you have a bath.

bath的反义词

    e.g. The three children all bath in the same bath water.
           这三个小孩用同一盆水洗澡。

5. 澡堂；（附带泳池的）公共浴室
    A bath or a baths is a public building containing a swimming pool, and sometimes other facilities that people can use to have a wash or a bath.

    e.g. One of the most important buildings in this ruined city is a public bath...
           在这座被毁坏的城市里，最重要的建筑物之一就是公共澡堂。
    e.g. As well as a Roman amphitheatre and baths, the town has two superb museums.
           除了罗马式圆形剧场和公共浴池，这个镇上还有两座非常好的博物馆。

6. （盛放溶液的）容器
    A bath is a container filled with a particular liquid, such as a dye or an acid, in which particular objects are placed, usually as part of a manufacturing or chemical process.

    e.g. ...a developing photograph placed in a bath of fixer.
           放在定影液中冲洗的照片

7. see also: bloodbath;bubble bath;swimming bath;Turkish bath