1. advance notice
2. a warning
Just wanted to give you a heads up so you'll be expecting his call.
Advance notice of something that will need attention.
Just a heads up that the customer is likely to escalate this problem...
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!!!!
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.
Only two players in a poker hand, typically Texas Hold 'em
That heads up round was intense
a warning, especially of danger or the need to be alert
Heads-up. There's a situation out there.
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