We found 7 dictionaries that define the word back-number:

General (7 matching dictionaries)

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

Definitions from WordNet (back-number) ▸ noun:  someone who is no longer popular Opposite: current, up-to-date, recent, modern ▸ Words similar to back-number ▸ Usage examples for back-number ▸ Idioms related to back-number ▸ Wikipedia articles (New!) ▸ Popular adjectives describing back-number ▸ Words that often appear near back-number ▸ Rhymes of back-number ▸ Invented words related to back-number