To go out of or away from: not allowed to leave the room. To go without taking or removing: left my book on the bus. To omit or exclude: left out the funniest part of the story. To have as a result, consequence, or remainder: The car left a trail of exhaust fumes. Two from eight leaves six. To cause or allow to be or remain in a specified state: left the lights on. To have remaining after death: left a young son. To bequeath: left her money to charity. To give over to another to control or act on: Leave all the details to us. To abandon or forsake: leave home; left her husband. To remove oneself from association with or participation in: left the navy for civilian life. To give or deposit, as for use or information, upon one's departure or in one's absence: He left a note for you. Leave your name and address. To cause or permit to be or remain: left myself plenty of time. Nonstandard To allow or permit; let. To set out or depart; go: When can you leave? To refrain from disturbing or interfering. leave off To stop; cease. leave off To stop doing or using. leave no stone unturned To make every possible effort. Permission to do something. See Synonyms at permission. Official permission to be absent from work or duty, as that granted to military or corporate personnel. The period of time granted by such permission. Also called leave of absence. An act of departing; a farewell: took leave of her with a heavy heart. To put forth foliage; leaf.