head up

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Related to headed up: in line with, came to a head

head up

1. Literally, to orient someone or something in the proper direction. In this usage, a noun or pronoun can be used between "head" and "up." Head up the animals, will you? We need to get them back into the barn.
2. To lead some group or delegation. Who will head up the committee for this initiative?
See also: head, up

heads up

1. An interjection used as a warning for any imminent danger. "Heads up!" he shouted as the brick fell off the edge of the building. Heads up, the boss is looking for you and she looks angry!
2. noun A preliminary notice, especially of future difficulty, trouble, or danger; a warning. Often hyphenated. Make sure everyone gets the heads-up about the inspection tomorrow morning. We don't want anyone coming in unprepared. Hey, just a heads-up—the boss is in a foul mood, so don't do anything to attract attention to yourself! Just give me a heads-up if you need a ride.
See also: head, up

head something up

 
1. Lit. to get something pointed in the right direction. (Especially a herd of cattle or a group of covered wagons.) Head those wagons up—we're moving out. Head up the wagons!
2. Fig. to be in charge of something; to be the head of some organization. I was asked to head the new committee up for the first year. Will you head up the committee for me?
See also: head, up

head up

Be in charge of, lead, as in She headed up the commission on conservation. [Colloquial; mid-1900s]
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heads up

A warning to watch out for potential danger, as in Heads up, that tree is coming down now! The expression is generally in the form of an interjection. [c. 1940]
See also: head, up

heads up

Look out; a warning. This slangy interjection dates from the early 1900s. In the later 1900s, the noun heads-up was born with a similar meaning. Thus, “Heads up, John, that branch will hit the power line,” and “Before the book signing Jane gave him a heads-up that some very critical readers would be questioning him.” And James Lee Burke had it in The Glass Rainbow (2010): “‘What’s on your mind?’ ‘Need to give you a heads-up. I got to get some guilt off my conscience as well.’”
See also: head, up