We found 4 dictionaries that define the word number-one:

General (2 matching dictionaries)

1. Number-One, number-one: Wordnik
2. number-one: TheFreeDictionary.com

Computing (1 matching dictionary)

3. number-one: Encyclopedia

Miscellaneous (1 matching dictionary)

4. number-one: Idioms

Phrases: Lists of box office number-one films, Number-one ticket holder, Lists of Billboard number-one country albums, more... ▸ Words similar to number-one ▸ Usage examples for number-one ▸ Idioms related to number-one ▸ Wikipedia articles (New!) ▸ Words that often appear near number-one ▸ Rhymes of number-one ▸ Invented words related to number-one