A variation of the word "hey." Can be used as a greeting, usually with the syllable drawn out while simultaneously rising and falling in inflection, as illustrated below in Example 1.

Can also be used as an expression of enthusiastic agreement in a conversation, as demonstrated below in Example 2.

NOTE:
One theory suggests that this variation of "hey" was popularized by the character of Dwayne (portrayed by Haywood Nelson) in the sitcom "What's Happenin'," although Dwayne's usage was three "hays" with shortened syllables, with the inflection on the middle "hay," as shown in Example 3 below.
Example 1:

"HaAAAAAay!"

Example 2:

Person #1: "It sure is hot today!"
Person #2: "HaAAAAAay!"

Example 3:

"Hay HAY hay!"
by Joey Baggadonuts July 21, 2006
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1. A greeting commonly known as "hello" or "hey".

2. Can also be used (at the same time) to mean "How Are You?"

To use both at the same time the other person must be familiar with the term else the conversation will go to pot.
MIMI: hay!
JAZ: I'm sweet thanks! hay?
MIMI: I'm cool.
JAZ: don't you just think "hay" is so much
easier than using ...how are you...
MIMI: yer totally, whoever says "how are you"
must be some kinda dork.
JAZ: I agree.
MIMI: GTG
JAZ: SUL!
MIMI: SUL?
JAZ: yer ...see you later...
MIMI: ok this is going too far...
by Mia34738 January 8, 2008
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(for girls) to suck on a guy's dick
(for guys) to suck on a girl's pussy
Irely: "When i hayed him, i put the whole thing in my mouth &almost threw up!"

Matt: "DAYUM. when i was haying that one girl, i got a boner! then we did it."
by fuckmefast October 23, 2008
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1. english slang for 'hi'

"hai.. comment me back"
by Johnny Babee April 18, 2008
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A new word being used on AIM "Hay" meaning "Hey" also being an acronym for "How are you?" So all in all it means "Hey how are you?"
snowboarderb420 : Hay
P8ntBal2Xtreme : Good , u ?
by Penguin Izzle February 27, 2008
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3. The Hai (shark) was an advanced model of the Marder-class midget submarines created in Germany during World War II. Its prototype performed poorly during test runs and therefore no other boats were produced.

The Hai was thirty-six meters long and its length allowed for larger batteries, giving it the maximum speed of twenty knots under water. In addition, the Hai could remain under water for up to two hours.

4. Hai (Ukrainian: Гаї) is a village in Brodivskyi Raion of Lviv Oblast, Ukraine
hai check wikipedia...this site is not allowing full definitions so again check wikipedia
by xxxxcome yyyyynot April 18, 2008
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