What is the meaning of Avail?

To turn to the advantage of. [ with of]

To be of service to.

To promote; to assist.

To be of use or advantage; to answer or serve the purpose; to have strength, force, or efficacy sufficient to accomplish the object.

To provide; to make available; to use or take advantage of (an opportunity or available resource).

Effect in achieving a goal or aim; purpose, use (now usually in negative constructions).

Proceeds; profits from business transactions.

An advertising slot or package.

A press avail.

Non-binding notice of availability for work.

A readily available stock of oil.

Benefit; value, profit; advantage toward success.

Effort; striving.

Clipping of available.

Source: wiktionary.org