a.

1. 擁有的，佔有的
2. 【語】所屬關係的；所有格的
3. 佔有慾強的[（+about/with）]
   He is possessive about his car.

   他不喜歡別人用他的車子。

n.【語】

1. 所有格[C][the S]
2. 所有格的字；所有格代名詞[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.