bought \??bo??t\ buy??ingFull Definition of BUYtransitive verb1 : to acquire possession, ownership, or rights to the use or services of by payment especially of money : purchase 2 a : to obtain in exchange for something often at a sacrifice <they bought peace with their freedom> b : redeem 6 3 : bribe, hire 4 : to be the purchasing equivalent of <the dollar buys less today than it used to> 5 : acc