1. (with a possessive pronoun) Everything that one is capable of.
She gave her all, and collapsed at the finish line.
2. (countable) The totality of one's possessions.
3. The whole number, quantity, or amount; the entire thing; everything included or concerned; the aggregate; the whole; totality; everything or every person; as, our all is at stake.
I’ve been working on this all year. (= from the beginning of the year until now.)
4. Only; alone; nothing but.
He's all talk; he never puts his ideas into practice.
6. to a complete degree or to the full or entire extent (`whole' is often used informally for `wholly')
7. Wholly; completely; altogether; entirely; quite; very; as, all bedewed; my friend is all for amusement.
8. Even; just. (Often a mere intensive adjunct.)