look up any word, like lemonparty:
 
5.
Only two players in a poker hand, typically Texas Hold 'em
That heads up round was intense
by Audreezy April 15, 2008
 
1.
Advance notice of something that will need attention.
Just a heads up that the customer is likely to escalate this problem...
by AKG August 30, 2005
 
2.
1. advance notice

2. a warning
Just wanted to give you a heads up so you'll be expecting his call.
by mandingoe January 18, 2005
 
3.
Exclamatory warning indicating that one practice increased alertness to avoid harm from a pressing threat.
Dorm Resident #1: Is that an M-80 in the toilet?

Dorm Resident #2: Heads up!!!!

*BOOOM!!*
by kwashia March 28, 2005
 
4.
A phrase which, upon hearing, means you should get your head down.
*man throwing baseball and missing the area, sending it on a direct course for a small child*

Man: Hey kid, heads up!

*Kid gets his head down and doesn't get hit*

Kid wins for reading urbandictionary.
by HackOtaku July 11, 2008
 
6.
A term in many competitive games for 1 on 1 competition. One of its more common uses is in card games where the value of hands can change due to the number of people playing. Heads-up offers favoriable odds for high cards like aces and kings, even with sub-par kickers.
I went heads-up with Tyler and beat him with a boat on the river.
by Lezard Valeth May 13, 2004
 
7.
a warning, especially of danger or the need to be alert
Heads-up. There's a situation out there.
by The Return of Light Joker December 30, 2010