1. A word used by english ppl like myself when trying to attract the attention of someone. 2. also can be used in a different way, if some one was to bump into you in the street, you'd turn around and say "oi!"

it doesnt really mean hello tho.
"Oi, are you listening to me?"
by english gal July 24, 2003
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To call someone ie; Hey! Yo! No! Stop! Freeze!
Oi!, make me a chicken sandwhich and some waffle fries!
by Jewferson October 4, 2007
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To attract attention synonym: Hey
Oi fuck face, you wanna my teeth round your neck?
by Gogandantess February 2, 2003
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Oi! is having a laugh and having a say.
Oi! is bigger than any uniform.
Oi! is sharp in brain and dress.
Oi! is you and me... Winning.
Oi! is thinking for yourself.
Oi! is pride and self-respect.
Oi! is the beat of the street.
Oi! is working class protest.
Oi! is youth eternal.
Oi! is youth enrage.
Oi! is a way of life.
Johnny isn't a Street Punk or a Skinhead, he's an Oi! Punk
by stateofalert February 1, 2005
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"OWN YOUR SHIT" - an exclusive group created by girls at Notre Dame Academy. These people aren't afraid to fuck shit up. They party hard, live life, and they crash every party. Outsiders really want to know these people and be like them. Their lifestyle is hard to imitate caused they're swagged the fuck out, bitches.
"Damn, there goes OYS! This party is about to be TURNT!"

"Shit... I want to be apart, but I'm not cool enough :'("
by fortiAYE & lil T-SWAG October 29, 2011
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Oi! is a music, as well as a slang to get someones attention.

(lower class brats, sham 69, cockney rejects, etc.)
"Oi! Oi! motherfucker!"
by Pires June 15, 2004
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