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We found 46 dictionaries with English definitions that include the word headache:
Click on the first link on a line below to go directly to a page where "headache" is defined.

General dictionaries General (29 matching dictionaries)
  1. headache: Merriam-Webster.com [home, info]
  2. headache: Oxford Dictionaries [home, info]
  3. headache: American Heritage Dictionary of the English Language [home, info]
  4. headache: Collins English Dictionary [home, info]
  5. headache: Vocabulary.com [home, info]
  6. headache: Macmillan Dictionary [home, info]
  7. Headache, headache: Wordnik [home, info]
  8. headache: Cambridge Advanced Learner's Dictionary [home, info]
  9. headache: Wiktionary [home, info]
  10. headache: Webster's New World College Dictionary, 4th Ed. [home, info]
  11. headache: The Wordsmyth English Dictionary-Thesaurus [home, info]
  12. headache: Infoplease Dictionary [home, info]
  13. headache: Dictionary.com [home, info]
  14. headache: Online Etymology Dictionary [home, info]
  15. headache: UltraLingua English Dictionary [home, info]
  16. headache: Cambridge Dictionary of American English [home, info]
  17. Headache (EP), Headache (Grimm), Headache (board game), Headache (disambiguation), Headache (game), Headache (journal), Headache (song), Headache: Wikipedia, the Free Encyclopedia [home, info]
  18. Headache: Online Plain Text English Dictionary [home, info]
  19. headache: Webster's Revised Unabridged, 1913 Edition [home, info]
  20. headache: Rhymezone [home, info]
  21. headache: AllWords.com Multi-Lingual Dictionary [home, info]
  22. headache: Free Dictionary [home, info]
  23. headache: Mnemonic Dictionary [home, info]
  24. headache: WordNet 1.7 Vocabulary Helper [home, info]
  25. headache: LookWAYup Translating Dictionary/Thesaurus [home, info]
  26. headache: Dictionary/thesaurus [home, info]
  27. headache: Wikimedia Commons US English Pronunciations [home, info]

Art dictionaries Art (1 matching dictionary)
  1. Headache: Natural Magick [home, info]

Computing dictionaries Computing (1 matching dictionary)
  1. headache: Encyclopedia [home, info]

Medicine dictionaries Medicine (12 matching dictionaries)
  1. Headache: MedTerms.com Medical Dictionary [home, info]
  2. Headache: Medical Dictionary [home, info]
  3. Headache: MedFriendly Glossary [home, info]
  4. headache: online medical dictionary [home, info]
  5. Headache: Specific Diseases/Disorders [home, info]
  6. Headache: MEDLINE plus Illustrated Medical Encyclopedia [home, info]
  7. Headache: Disorder Index [home, info]
  8. headache: Medical dictionary [home, info]
  9. Headache: Rudy's List of Archaic Medical Terms [home, info]
  10. Headache: University of Maryland Glossary of Medical Terms [home, info]
  11. Headache: Drug Medical Dictionary [home, info]
  12. headache: Hyperdictionary [home, info]

Miscellaneous dictionaries Miscellaneous (2 matching dictionaries)
  1. Headache: Brilliant Dream Dictionary [home, info]
  2. headache: Idioms [home, info]

Tech dictionaries Tech (1 matching dictionary)
  1. headache: Oil and Gas Well Drilling and Servicing eTool [home, info]

(Note: See headachy for more definitions.)

Quick definitions from Macmillan (
American English Definition British English Definition

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Quick definitions from WordNet (headache)

noun:  pain in the head caused by dilation of cerebral arteries or muscle contractions or a reaction to drugs
noun:  something or someone that causes anxiety; a source of unhappiness

▸ Also see headachy
Word origin

Words similar to headache

Usage examples for headache

Popular adjectives describing headache

Words that often appear near headache

Rhymes of headache

Invented words related to headache

Phrases that include headache:   tension headache, migraine headache, alarm clock headache, organic headache, tension type headache, more...

Words similar to headache:   cephalalgia, concern, headachy, vexation, worry, head ache, problem, more...

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