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We found 41 dictionaries with English definitions that include the word castor:
Click on the first link on a line below to go directly to a page where "castor" is defined.

General (34 matching dictionaries)

1. Castor, castor: Merriam-Webster.com [home, info]
2. Castor, Castor, castor: Oxford Learner's Dictionaries [home, info]
3. Castor, castor, castor: American Heritage Dictionary of the English Language [home, info]
4. castor: Collins English Dictionary [home, info]
5. Castor, castor: Vocabulary.com [home, info]
6. castor: Macmillan Dictionary [home, info]
7. Castor, castor: Wordnik [home, info]
8. castor: Cambridge Advanced Learner's Dictionary [home, info]
9. castor: Wiktionary [home, info]
10. castor: Webster's New World College Dictionary, 4th Ed. [home, info]
11. Castor, castor: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. castor: Infoplease Dictionary [home, info]
13. Castor: Dictionary.com [home, info]
14. castor: Online Etymology Dictionary [home, info]
15. Castor, castor: UltraLingua English Dictionary [home, info]
16. Castor (band), Castor (disambiguation), Castor (framework), Castor (genus), Castor (mountain), Castor (mythology), Castor (rocket stage), Castor (star), Castor: Wikipedia, the Free Encyclopedia [home, info]
17. Castor: Online Plain Text English Dictionary [home, info]
18. castor: Webster's Revised Unabridged, 1913 Edition [home, info]
19. Castor: Rhymezone [home, info]
20. Castor, castor, castor (m): AllWords.com Multi-Lingual Dictionary [home, info]
21. castor: Webster's 1828 Dictionary [home, info]
22. CASTOR: Stammtisch Beau Fleuve Acronyms [home, info]
23. castor: All About Homonyms [home, info]
24. castor: Hutchinson's Dictionary of Difficult Words [home, info]
25. Castor: Dictionary of Phrase and Fable (1898) [home, info]
26. Castor: 1911 edition of the Encyclopedia Britannica [home, info]
27. castor: Free Dictionary [home, info]
28. castor: Hutchinson Dictionaries [home, info]
29. castor: Mnemonic Dictionary [home, info]
30. castor: WordNet 1.7 Vocabulary Helper [home, info]
31. Castor, castor: LookWAYup Translating Dictionary/Thesaurus [home, info]
32. Castor: Dictionary/thesaurus [home, info]

Art (1 matching dictionary)

33. CASTOR: Epicurus.com Wine Glossary [home, info]

Computing (1 matching dictionary)

34. Castor (genus), Castor (mythology), Castor (zoology), Castor: Encyclopedia [home, info]

Medicine (1 matching dictionary)

35. Castor (genus), Castor (zoology), castor: Medical dictionary [home, info]

Miscellaneous (1 matching dictionary)

36. CASTOR: Acronym Finder [home, info]

Science (1 matching dictionary)

37. Castor: Extragalactic Astronomy [home, info]

Slang (1 matching dictionary)

38. castor: Urban Dictionary [home, info]

Tech (1 matching dictionary)

39. Castor: AUTOMOTIVE TERMS [home, info]

(Note: See castors for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (Castor) ▸ noun:  type genus of the Castoridae: beavers ▸ noun:  a multiple star with 6 components; second brightest in Gemini; close to Pollux ▸ noun:  a hat made of beaver fur or similar material ▸ noun:  a pivoting roller attached to the bottom of furniture or trucks or portable machines to make them movable ▸ noun:  a shaker with a perforated top for sprinkling powdered sugar ▸ name:  A surname (rare: 1 in 50000 families; popularity rank in the U.S.: #5833) ▸ Also see castors ▸ Word origin ▸ Words similar to castor ▸ Usage examples for castor ▸ Idioms related to castor (New!) ▸ Popular adjectives describing castor ▸ Words that often appear near castor ▸ Rhymes of castor ▸ Invented words related to castor