It's the Thai word for "Oyster"

Coincidentally (or perhaps not) it is also slang word for a girl's private area. (must be because of the pearl). I'm completely serious, this is totally accurate -- ask any Thai.
Seafood waitress in Thailand: Say, sailor, would you like to try some hoy?
by chez irman August 13, 2005
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This is a special word that has one proper meaning, it is used to describe bad fortune (eg. said after u see someone fall over or make any kind of mistake) or alternatively, a person who is mal-co-ordinated, or generally unfortunate (every group of friends has one, you know, the one who always gets a football in the nads)
(your mate is walking along and walks into a lampost)- your immediate reaction; HOY!!!!!!!!!!!
by TRISTAN January 3, 2004
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Word used as "Hi" or "Hey" in Filipino
(someones walking)

"Hoi!"

"huh? what me?"

"yes"
by AzN NateZess May 30, 2005
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Pronounced H-wee

This is used as a greeting.

It is said the term comes from when Craig accidentally pressed "O" on msn whilst greeting a contact (Hi but pressed H,O,I)
The word was then used from that day on as it was cool.

This word has also been adapted by Dai to Hooooooooooooooooi

The longer you hold the pronunciation of it the greater you happiness is supposedly.
Col: Hoi!
Tan: Aight son?

or

Dai:Hooooooooooooooooooooooooooi!
Craig: Gosh you're happy today
by Davegroglonthedole September 6, 2007
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hobo hoi hoi-(n) used in j.LE quote "STFU U MTFB GO FUMH U WSHHH" the wshhh stands for "weiner sucker hobo hoi hoi" just another insult to refer someone as a hobo on the streets sellin their bodies to random people and loves to eat ho' ho's
I hate you, you freaking hobo hoi hoi i hope you get raped and choked from eating ho' ho's
by Jennifer Le May 7, 2008
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