We found 13 dictionaries that define the word on the double:

General (8 matching dictionaries)

1. on the double: Merriam-Webster
2. on the double: Oxford Learner's Dictionaries
3. on the double: Collins English Dictionary
4. on the double: Wiktionary
5. on the double: Dictionary.com
6. On the Double (album), On the Double (film): Wikipedia, the Free Encyclopedia
7. On the Double: TheFreeDictionary.com

Business (1 matching dictionary)

8. On the Double: Legal dictionary

Computing (1 matching dictionary)

9. On the Double: Encyclopedia

Medicine (1 matching dictionary)

10. On the Double: Medical dictionary

Miscellaneous (1 matching dictionary)

11. on the double: Idioms

Slang (1 matching dictionary)

12. on the double: Urban Dictionary

Definitions from Wikipedia (On the Double) ▸ noun:  a 1961 comedy film, directed by Melville Shavelson, who also wrote the screenplay with Jack Rose. ▸ noun:  a double album by Dutch rock band Golden Earring, released in 1969. Phrases: where to wager on the daily double, more... ▸ Words similar to on the double ▸ Usage examples for on the double ▸ Idioms related to on the double ▸ Wikipedia articles (New!) ▸ Words that often appear near on the double ▸ Rhymes of on the double ▸ Invented words related to on the double