We found 10 dictionaries that define the word backaches:

General (8 matching dictionaries)

1. backaches: Merriam-Webster
2. backaches: Collins English Dictionary
3. backaches: Vocabulary.com
4. backaches: Wordnik
5. backaches: Cambridge Advanced Learner's Dictionary
6. backaches: Wiktionary
7. backaches: Dictionary.com
8. Backaches: TheFreeDictionary.com

Medicine (2 matching dictionaries)

9. backaches: Merriam-Webster Medical Dictionary
10. Backaches: Medical dictionary

(Note: See backache as well.)

Definitions from Wiktionary (backache) ▸ noun:  Any pain or ache in the back. ▸ Also see backache Opposite: frontaches, spinal relief, pain-free back ▸ Words similar to backaches ▸ Usage examples for backaches ▸ Idioms related to backaches ▸ Wikipedia articles (New!) ▸ Popular adjectives describing backaches ▸ Words that often appear near backaches ▸ Rhymes of backaches ▸ Invented words related to backaches