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We found 33 dictionaries with English definitions that include the word derail:
Click on the first link on a line below to go directly to a page where "derail" is defined.

General (29 matching dictionaries)

1. derail: Merriam-Webster.com [home, info]
2. derail: Oxford Dictionaries [home, info]
3. derail: American Heritage Dictionary of the English Language [home, info]
4. derail: Collins English Dictionary [home, info]
5. derail: Vocabulary.com [home, info]
6. derail: Macmillan Dictionary [home, info]
7. Derail, derail: Wordnik [home, info]
8. derail: Cambridge Advanced Learner's Dictionary [home, info]
9. derail: Wiktionary [home, info]
10. derail: Webster's New World College Dictionary, 4th Ed. [home, info]
11. derail: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. derail: Infoplease Dictionary [home, info]
13. Derail, derail: Dictionary.com [home, info]
14. derail: Online Etymology Dictionary [home, info]
15. derail: UltraLingua English Dictionary [home, info]
16. derail: Cambridge Dictionary of American English [home, info]
17. Derail (railroad), Derail: Wikipedia, the Free Encyclopedia [home, info]
18. Derail: Online Plain Text English Dictionary [home, info]
19. derail: Webster's Revised Unabridged, 1913 Edition [home, info]
20. derail: Rhymezone [home, info]
21. Derail: AllWords.com Multi-Lingual Dictionary [home, info]
22. derail: Free Dictionary [home, info]
23. derail: Mnemonic Dictionary [home, info]
24. derail: WordNet 1.7 Vocabulary Helper [home, info]
25. derail: LookWAYup Translating Dictionary/Thesaurus [home, info]
26. derail: Dictionary/thesaurus [home, info]
27. derail: Wikimedia Commons US English Pronunciations [home, info]

Business (1 matching dictionary)

28. derail: Legal dictionary [home, info]

Computing (1 matching dictionary)

29. derail: Encyclopedia [home, info]

Medicine (1 matching dictionary)

30. derail: Medical dictionary [home, info]

Slang (1 matching dictionary)

31. derail: Urban Dictionary [home, info]

(Note: See derails for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (derail) ▸ verb:  run off or leave the rails ("The train derailed because a cow was standing on the tracks") ▸ verb:  cause to run off the tracks ("They had planned to derail the trains that carried atomic waste") ▸ Also see derails ▸ Word origin ▸ Words similar to derail ▸ Usage examples for derail ▸ Words that often appear near derail ▸ Rhymes of derail ▸ Invented words related to derail