What does "supply" mean?

Additional senses

1. 2.To fill temporarily; to serve as substitute for another in, as a vacant place or office; to occupy; to have possession of; as, to supply a pulpit.
2. 3.To give; to bring or furnish; to provide; as, to supply money for the war. Prior.
3. 4.The act of supplying; supplial. A. Tucker.
4. 5.That which supplies a want; sufficiency of things for use or want. Specifically: -- (a) Auxiliary troops or reënforcements. "My promised supply of horsemen." Shak. (b) The food, and the like, which meets the daily necessities of an army or other large body of men; store; -- used chiefly in the plural; as, the army was discontented for lack of supplies. (c) An amount of money provided, as by Parliament or Congress, to meet the annual national expenditures; generally in the plural; as, to vote supplies. (d) A person who fills a place for a time; one who supplies the place of another; a substitute; esp., a clergyman who supplies a vacant pulpit. Stated supply (Eccl.), a clergyman employed to supply a pulpit for a definite time, but not settled as a pastor. [U.S.] -- Supply and demand. (Polit. Econ.) "Demand means the quantity of a given article which would be taken at a given price. Supply means the quantity of that article which could be had at that price." F. A. Walker.
5. 6.Serving to contain, deliver, or regulate a supply of anything; as, a supply tank or valve. Supply system (Zoöl.), the system of tubes and canals in sponges by means of which food and water are absorbed. See Illust. of Spongiæ.