We found 21 dictionaries that define the word ducker:

General (14 matching dictionaries)

1. ducker: Merriam-Webster
2. ducker: Oxford Learner's Dictionaries
3. ducker: Collins English Dictionary
4. Ducker, ducker: Wordnik
5. Ducker, ducker: Wiktionary
6. ducker: Infoplease Dictionary
7. ducker: Dictionary.com
8. Ducker: Online Plain Text English Dictionary
9. ducker: Webster's Revised Unabridged, 1913 Edition
10. Ducker: Rhymezone
11. Ducker: AllWords.com Multi-Lingual Dictionary
12. ducker: Webster's 1828 Dictionary
13. ducker: FreeDictionary.org
14. Ducker: TheFreeDictionary.com

Business (1 matching dictionary)

15. ducker: Legal dictionary

Computing (1 matching dictionary)

16. ducker: Encyclopedia

Medicine (1 matching dictionary)

17. ducker: Medical dictionary

Miscellaneous (1 matching dictionary)

18. ducker: Idioms

Slang (2 matching dictionaries)

19. Ducker: Green’s Dictionary of Slang
20. Ducker: Urban Dictionary

Tech (1 matching dictionary)

21. Rane Professional Audio Reference (No longer online)

(Note: See duck as well.)

Definitions from Wiktionary (ducker) ▸ noun:  One who, or that which, ducks; a plunger; a diver. ▸ noun:  A surname. ▸ noun:  Alternative form of doucker [(UK, dialect) Any of a number of swimming birds that dive underwater:] Similar: doucker, dunker, duckie, dipper, dupper, diver, dunter goose, ducke, Duckman, douser, more... Opposite: riser, stander, upright Types: duck-billed platypi, more... ▸ Words similar to ducker ▸ Usage examples for ducker ▸ Idioms related to ducker ▸ Wikipedia articles (New!) ▸ Popular adjectives describing ducker ▸ Words that often appear near ducker ▸ Rhymes of ducker ▸ Invented words related to ducker