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We found 42 dictionaries with English definitions that include the word roach:
Click on the first link on a line below to go directly to a page where "roach" is defined.

General (32 matching dictionaries)

1. roach: Merriam-Webster.com [home, info]
2. roach, roach, roach: Oxford Learner's Dictionaries [home, info]
3. roach, roach, roach: American Heritage Dictionary of the English Language [home, info]
4. roach: Collins English Dictionary [home, info]
5. roach: Vocabulary.com [home, info]
6. roach: Macmillan Dictionary [home, info]
7. Roach, roach: Wordnik [home, info]
8. roach: Cambridge Advanced Learner's Dictionary [home, info]
9. Roach, roach: Wiktionary [home, info]
10. roach: Webster's New World College Dictionary, 4th Ed. [home, info]
11. roach: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. roach: Infoplease Dictionary [home, info]
13. roach: Dictionary.com [home, info]
14. roach (1), roach (2): Online Etymology Dictionary [home, info]
15. roach: UltraLingua English Dictionary [home, info]
16. roach: Cambridge Dictionary of American English [home, info]
17. Roach (cannabis culture), Roach (headdress), Roach (marijuana), Roach (rapper), Roach (smoking), Roach (surname), Roach, The Roach: Wikipedia, the Free Encyclopedia [home, info]
18. Roach: Online Plain Text English Dictionary [home, info]
19. roach: Webster's Revised Unabridged, 1913 Edition [home, info]
20. roach: Rhymezone [home, info]
21. Roach: AllWords.com Multi-Lingual Dictionary [home, info]
22. roach: Webster's 1828 Dictionary [home, info]
23. Roach: Dictionary of Phrase and Fable (1898) [home, info]
24. Roach: 1911 edition of the Encyclopedia Britannica [home, info]
25. roach: Free Dictionary [home, info]
26. roach: The Phrontistery - A Dictionary of Obscure Words [home, info]
27. roach: Mnemonic Dictionary [home, info]
28. roach: WordNet 1.7 Vocabulary Helper [home, info]
29. Roach, roach: LookWAYup Translating Dictionary/Thesaurus [home, info]
30. Roach: Dictionary/thesaurus [home, info]

Computing (2 matching dictionaries)

31. roach: Free On-line Dictionary of Computing [home, info]
32. Roach (disambiguation), roach: Encyclopedia [home, info]

Medicine (2 matching dictionaries)

33. roach: online medical dictionary [home, info]
34. Roach (disambiguation), roach: Medical dictionary [home, info]

Miscellaneous (1 matching dictionary)

35. roach: A Word A Day [home, info]

Slang (3 matching dictionaries)

36. roach: English slang and colloquialisms used in the United Kingdom [home, info]
37. Roach: Street Terms: Drugs and the Drug Trade [home, info]
38. roach: Urban Dictionary [home, info]

Sports (1 matching dictionary)

39. Roach: Sports Definitions [home, info]

Tech (1 matching dictionary)

40. roach: SeaTalk Dictionary of English Nautical Language [home, info]

(Note: See roachs for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (roach) ▸ noun:  European freshwater food fish having a greenish back ▸ noun:  the butt of a marijuana cigarette ▸ noun:  any of numerous chiefly nocturnal insects; some are domestic pests ▸ noun:  street names for flunitrazepan ▸ name:  A surname (rare: 1 in 6250 families; popularity rank in the U.S.: #762) ▸ Also see roachs ▸ Word origin ▸ Words similar to roach ▸ Usage examples for roach ▸ Idioms related to roach (New!) ▸ Popular adjectives describing roach ▸ Words that often appear near roach ▸ Rhymes of roach ▸ Invented words related to roach