Definition from Wiktionary, the free dictionary
- (chiefly US, idiomatic) A warning or call to pay attention; an advisory notice.
- Send everyone a heads-up about the inspection tomorrow.
- With head directly above the neck, eyes front.
- A heads-up posture meant the pilot couldn't pay attention to his instruments.
- Alert; vigilant
- Getting those marbles off the red carpet was a real heads-up move.