We found 19 dictionaries that define the word sick headache:

General (15 matching dictionaries)

1. sick headache: Merriam-Webster
2. sick headache: Oxford Learner's Dictionaries
3. sick headache: American Heritage Dictionary of the English Language
4. sick headache: Collins English Dictionary
5. sick headache: Vocabulary.com
6. sick-headache, sick headache: Wordnik
7. sick headache: Cambridge Advanced Learner's Dictionary
8. sick headache: The Wordsmyth English Dictionary-Thesaurus
9. sick headache: Infoplease Dictionary
10. sick headache: Dictionary.com
11. sick headache: Rhymezone
12. sick headache: FreeDictionary.org
13. sick headache: Mnemonic Dictionary
14. sick headache: TheFreeDictionary.com
15. sick headache: Wiktionary

Computing (1 matching dictionary)

16. sick headache: Encyclopedia

Medicine (3 matching dictionaries)

17. sick headache: Merriam-Webster Medical Dictionary
18. online medical dictionary (No longer online)
19. sick headache: Medical dictionary

(Note: See sick_headaches as well.)

Definitions from Wiktionary (sick headache) ▸ noun:  (archaic) A migraine. Opposite: healthy headache, tension headache ▸ Words similar to sick headache ▸ Usage examples for sick headache ▸ Idioms related to sick headache ▸ Wikipedia articles (New!) ▸ Words that often appear near sick headache ▸ Rhymes of sick headache ▸ Invented words related to sick headache