a.

1. 拥有的，占有的
2. 【语】所属关系的；所有格的
3. 占有欲强的[（+about/with）]
   He is possessive about his car.

   他不喜欢别人用他的车子。

n.【语】

1. 所有格[C][the S]
2. 所有格的字；物主代词[C]

adj.

1. demanding someone's total attention and love.
2. showing an unwillingness to share one's possessions.
3. Grammar  relating to or denoting the case of nouns and pronouns expressing possession.