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We found 12 dictionaries with English definitions that include the word head ache:
Click on the first link on a line below to go directly to a page where "head ache" is defined.

General (9 matching dictionaries)

1. head ache: Vocabulary.com [home, info]
2. head-ache: Wordnik [home, info]
3. head ache: Dictionary.com [home, info]
4. head ache: Rhymezone [home, info]
5. head ache: Free Dictionary [home, info]
6. head ache: Mnemonic Dictionary [home, info]
7. head ache: WordNet 1.7 Vocabulary Helper [home, info]
8. head ache: LookWAYup Translating Dictionary/Thesaurus [home, info]
9. head ache: Dictionary/thesaurus [home, info]

Computing (1 matching dictionary)

10. head ache: Encyclopedia [home, info]

Medicine (1 matching dictionary)

11. head ache: Medical dictionary [home, info]

Slang (1 matching dictionary)

12. head ache: Urban Dictionary [home, info]

(Note: See head_aches for more definitions.)

Quick definitions from WordNet (head ache) ▸ noun:  pain in the head caused by dilation of cerebral arteries or muscle contractions or a reaction to drugs ▸ Also see head_aches ▸ Words similar to head ache ▸ Usage examples for head ache ▸ Idioms related to head ache (New!) ▸ Words that often appear near head ache ▸ Rhymes of head ache ▸ Invented words related to head ache