head-ache

headache

[hed-eyk]
noun
1.
a pain located in the head, as over the eyes, at the temples, or at the base of the skull.
2.
an annoying or bothersome person, situation, activity, etc.

Origin:
before 1000; Middle English; Old English hēafodece. See head, ache

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
headache (ˈhɛdˌeɪk)
 
n
1.  Technical name: cephalalgia pain in the head, caused by dilation of cerebral arteries, muscle contraction, insufficient oxygen in the cerebral blood, reaction to drugs, etc
2.  informal any cause of worry, difficulty, or annoyance

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

headache
O.E. heafod ece, from head + ache. Colloquial sense of "troublesome problem" is first recorded 1934.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

headache head·ache (hěd'āk')
n.
A pain in the head. Also called cephalalgia.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
headache  [%PREMIUM_LINK%]     (hěd'āk')  Pronunciation Key 
Pain in the head, caused by stimulation of or pressure to any of various structures of the head, such as tissue covering the cranium, cranial nerves, or blood vessels. Headache can be a primary disorder, as in migraine or cluster headaches, or a common symptom associated with head injury or many illnesses such as acute infection, brain tumor or abscess, eye disorders such as glaucoma, dental disease, and hypertension. See also cluster headache, migraine.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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