Webster's Revised Unabridged Dictionary · 1913

Buy

Buy (bī) , transitive verb

[Old English buggen, buggen, bien, Anglo-Saxon bycgan, akin to Old Saxon buggean, Gothic bugjan.]

1.
To acquire the ownership of (property) by giving an accepted price or consideration therefor, or by agreeing to do so; to acquire by the payment of a price or value; to purchase; -- opposed to sell.
Buy what thou hast no need of, and ere long thou wilt sell thy necessaries. — B. Franklin
2.
To acquire or procure by something given or done in exchange, literally or figuratively; to get, at a cost or sacrifice; to buy pleasure with pain.
Buy the truth and sell it not; also wisdom, and instruction, and understanding. — Bible (KJV) - Proverb xxiii. 23
Collocations (6)
To buy again , See Againbuy. [Obsolete] — Chaucer
To buy off , (a) To influence to compliance; to cause to bend or yield by some consideration; as, to buy off conscience. (b) To detach by a consideration given; as, to buy off one from a party.
To buy out , (a) To buy off, or detach from. — Shakespeare (b) To purchase the share or shares of in a stock, fund, or partnership, by which the seller is separated from the company, and the purchaser takes his place; as, A buys out B. (c) To purchase the entire stock in trade and the good will of a business.
To buy in , to purchase stock in any fund or partnership.
To buy on credit , to purchase, on a promise, in fact or in law, to make payment at a future day.
To buy the refusal , to give a consideration for the right of purchasing, at a fixed price, at a future time.

Buy , intransitive verb

To negotiate or treat about a purchase.
I will buy with you, sell with you. — Shakespeare