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Someone or something that is annoying or frustrating. This filing project is such a headache—I can't find a darn thing I'm looking for!
A very intense, painful headache, i.e., one that makes one's head feel as though it is splitting apart. We were up all night drinking cheap wine, and I woke up the next morning with a splitting headache. I've had this splitting headache for nearly four hours, and nothing I do seems to help.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
Fig. a severe headache, as if one's head were splitting open. I'm sorry, I can't. I have a splitting headache. Maybe Fred will play bridge with you. This splitting headache has been going on for hours.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
1. n. an annoying person or thing. Cars can be such a headache.
2. n. liquor. Pour me some more of that headache, will you?
1. n. a central source of unnecessary problems; a person who habitually causes problems. Here’s another memo from the headache department.
2. and headache house n. a liquor store or department. I stopped in at the headache house for some supplies.
n. a male law enforcement agent. The headache man was here to see you, Ernie.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.