A partner, especially one of a pair or team associated under the buddy system.
Friend or comrade; chum. Used as a form of familiar address, especially for a man or boy: Watch it, buddy.
intr.v.
bud·died, bud·dy·ing, bud·dies To associate as a buddy or buddies: buddied around with the older guys. Phrasal Verb(s): buddy upTo ingratiate oneself, as by presuming friendship: buddied up to the coach in hopes of making the team.
1850, Amer.Eng., possibly an alteration of brother, or from Brit. colloquial butty "companion" (1802), itself perhaps a variant of booty in booty fellow "confederate who shares plunder" (1530). But butty, meaning "work-mate," also was a localized dialect word in England and Wales, attested since 18c., and long associated with coal miners.