(chiefly uncountable) The quality of being available. / (countable) That which is available.

(transitive, often reflexive) To turn to the advantage of. / (transitive) To be of service to. / (transitive) To promote; to assist.

Effect in achieving a goal or aim; purpose, use (now usually in negative constructions). / (now only US) Proceeds; profits from business transactions.

simple past tense and past participle of avail

plural of availment

(idiomatic) With no success or benefit; unsuccessfully.

(obsolete) Profitable, useful; of much avail.

A release of software which is good enough to be made available outside the originating company, to the general public.

(physics) All energy that could somehow be converted to mechanical work.

(pharmacology) The quality of being efficacious when taken by mouth (usually of a medicinal drug).