The definition of live in is someone who resides in your home with you permanently or on a full time basis.
(adjective)An example of a live in housekeeper is someone who has a room where she sleeps in your home and who stays there on a permanent basis.
See live-in in Webster's New World College Dictionary
☆
adjective
noun
See live-in in American Heritage Dictionary 4
adjective
Learn more about live-in