We found 22 dictionaries that define the word dup:

General (14 matching dictionaries)

1. dup: Merriam-Webster
2. dup: Collins English Dictionary
3. Dup, dup: Wordnik
4. DUP, dup: Wiktionary
5. dup: Webster's New World College Dictionary, 4th Ed.
6. dup: Infoplease Dictionary
7. dup, dup: Dictionary.com
8. DUP, Dup (system call), Dup: Wikipedia, the Free Encyclopedia
9. Dup: Online Plain Text English Dictionary
10. dup: Webster's Revised Unabridged, 1913 Edition
11. Dup: AllWords.com Multi-Lingual Dictionary
12. DUP: Stammtisch Beau Fleuve Acronyms
13. dup: FreeDictionary.org
14. dup: TheFreeDictionary.com

Art (1 matching dictionary)

15. Shakespeare Glossary (No longer online)

Medicine (2 matching dictionaries)

16. dup: Merriam-Webster Medical Dictionary
17. dup: Medical dictionary

Miscellaneous (3 matching dictionaries)

18. DUP: Acronym Finder
19. DUP: Three Letter Words with definitions
20. AbbreviationZ (No longer online)

Slang (2 matching dictionaries)

21. dup: Green’s Dictionary of Slang
22. dup: Urban Dictionary

Definitions from Wiktionary (DUP) ▸ verb:  to open (a door, gate etc.) ▸ noun:  (Northern Ireland, politics) Initialism of Democratic Unionist Party. Similar: doot, shut the door, Dodd, dook, daylight, dap up, dunt, dunch, dyke, doff, more... Opposite: undup, single, unique, original Phrases: dup killer, dup loop, more... Adjectives: small, lub, long, additional, louder, dummy, short, lubb, large, democratic, hardline ▸ Words similar to dup ▸ Usage examples for dup ▸ Idioms related to dup ▸ Wikipedia articles (New!) ▸ Popular adjectives describing dup ▸ Words that often appear near dup ▸ Rhymes of dup ▸ Invented words related to dup