https://thefreedictionary.com/leave


1. To go out of or away from: not allowed to leave the room.
2.
a. To go without taking or removing: left my book on the bus.
b. To omit or exclude: left out the funniest part of the story.

3. To have as a result, consequence, or remainder: The car left a trail of exhaust fumes. Two from eight leaves six.
4. To cause or allow to be or remain in a specified state: left the lights on.
5.
a. To have remaining after death: left a young son.
b. To bequeath: left her money to charity.

6. To give over to another to control or act on: Leave all the details to us.
7.
a. To abandon or forsake: leave home; left her husband.
b. To remove oneself from association with or participation in: left the navy for civilian life.

8.
a. 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.
b. To cause or permit to be or remain: left myself plenty of time.

9. Nonstandard To allow or permit; let.


Idioms:
leave/let alone
To refrain from disturbing or interfering.

leave no stone unturned
To make every possible effort.