We found 10 dictionaries that define the word head ache:

General (7 matching dictionaries)

1. head ache: Vocabulary.com
2. head-ache: Wordnik
3. head ache: Dictionary.com
4. head ache: Rhymezone
5. head ache: FreeDictionary.org
6. head ache: Mnemonic Dictionary
7. head ache: TheFreeDictionary.com

Computing (1 matching dictionary)

8. head ache: Encyclopedia

Medicine (1 matching dictionary)

9. head ache: Medical dictionary

Slang (1 matching dictionary)

10. head ache: Urban Dictionary

(Note: See head_aches as well.)

Definitions from WordNet (head ache) ▸ noun:  pain in the head caused by dilation of cerebral arteries or muscle contractions or a reaction to drugs Types: migraine, cluster, tension, more... ▸ Words similar to head ache ▸ Usage examples for head ache ▸ Idioms related to head ache ▸ Wikipedia articles (New!) ▸ Words that often appear near head ache ▸ Rhymes of head ache ▸ Invented words related to head ache