Definition of all

adjective:

1. Being or representing the entire or total number, amount, or quantity: All the windows are open. Deal all the cards. See Synonyms at whole.
2. Constituting, being, or representing the total extent or the whole: all Christendom.
3. Being the utmost possible of: argued the case in all seriousness.
5. Every: got into all manner of trouble.
6. Any whatsoever: beyond all doubt.
7. Pennsylvania. Finished; used up: The apples are all. See Regional Note at gum band.
8. Informal. Being more than one: Who all came to the party? See Regional Note at you-all.

noun:
The whole of one's fortune, resources, or energy; everything one has: The brave defenders gave their all.
pronoun:

1. The entire or total number, amount, or quantity; totality: All of us are sick. All that I have is yours.
2. Everyone; everything: justice for all.

adverb:

1. Wholly; completely: a room painted all white; directions that were all wrong.
2. Each; apiece: a score of five all.
3. So much: I am all the better for that experience.