my

I. adjective Etymology: Middle English, from Old English mīn, from mīn, suppletive genitive of ic I; akin to Old English mē me Date: 12th century 1. of or relating to me or myself especially as possessor, agent, object of an action, or familiar person <

my car

> <

my injuries

> <

my man

> 2. — used interjectionally to express surprise and sometimes reduplicated <

my oh my

> — used also interjectionally with names of various parts of the body to express doubt or disapproval <

my foot

> II. abbreviation million years