n.

1. 自负；虚荣（心）[U]
   He did that to gratify his girlfriend's vanity.

   他做那事是要满足他女友的虚荣心。

2. 虚幻；无意义，无益[U]
   the vanity of a selfish life

   利己生活的空虚无聊

3. 无价值的东西[C]
   I had forsaken the vanities of the world.

   我已将人世的无聊琐事置之不理。

4. （妇女用来放梳妆用品的）小粉盒，小手提包[C]
5. 梳妆台[C]

n.

1. excessive pride in or admiration of one's own appearance or achievements.
   ▸ [as modifier] denoting a company publishing works at the author's expense.
2. the quality of being worthless or futile.
3. N. Amer. a dressing table.