Definitions

1. adjective

belonging to or associated with the person speaking

“This is my car.”

2. adverb

indicating possession or association with the speaker

“She sings my favorite song.”

3. noun

a possessive pronoun used to refer to something belonging to the speaker

“My book is on the table.”

4. possessive adjective

used to indicate that something belongs to the speaker

“My brother is coming over.”