Universally known as I want to hook up with you or I am interested in you.
Friend 1: So I got a message on Facebook from this chick that just said hey :)

Friend 2: Dude she totally wants to get at you
by Patriot93 October 18, 2010
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1. The most informal form of greeting. Usually used in a friendly manner or to sound cool and relaxed.
2. An exclamation used to get someone's attention
1. Hey, what's up?
2. HEY! Wait for me!
3. HEY YOU! Get away from my wife!
by Jamesrob92 December 19, 2006
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The signal that the chick you just texted is possibly interested and/or willing to converse with you

also refer to "Hi:)"
Text Conversation:

Austin: EMILY! whats up????
Emily: Hey:)

Looks like we got a winner!!!!
by ThatGuyWhoAddedThatWord July 31, 2011
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It means "we argued and I fucked up but this is me trying to be all cute and start a new conversation"
The lowercase "h" mento to be less harsh and the "." At the end is ment to seem like you are saying it in a mopping way.
*le after big argument*
hey.

hey.

We good?

Yeah.
by Let's be real January 18, 2016
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I word to use to get someone's attention. Even if you don't know the persons name by simply saying "hey" you can easily get their attention
guy 1:Hey Alex what's that guys name over there?
Alex: How the hell should I know?
Guy 1: Hey!!
Mystery guy: ::looks around confused::
Guy 1: O hi.
by SoMe RaNdOm PeRsOn March 8, 2005
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