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We found 43 dictionaries with English definitions that include the word killer:
Click on the first link on a line below to go directly to a page where "killer" is defined.

General (29 matching dictionaries)

1. killer: Merriam-Webster.com [home, info]
2. killer: Oxford Learner's Dictionaries [home, info]
3. killer: American Heritage Dictionary of the English Language [home, info]
4. killer: Collins English Dictionary [home, info]
5. killer: Vocabulary.com [home, info]
6. killer: Macmillan Dictionary [home, info]
7. Killer, killer: Wordnik [home, info]
8. killer: Cambridge Advanced Learner's Dictionary [home, info]
9. killer: Wiktionary [home, info]
10. killer: Webster's New World College Dictionary, 4th Ed. [home, info]
11. killer: Infoplease Dictionary [home, info]
12. Killer, killer: Dictionary.com [home, info]
13. killer: UltraLingua English Dictionary [home, info]
14. killer: Cambridge Dictionary of American English [home, info]
15. killer: Cambridge International Dictionary of Idioms [home, info]
16. KILLER, Killer (Adamski song), Killer (Alice Cooper album), Killer (Belgian band), Killer (Finnish band), Killer (Seal song), Killer (Swiss band), Killer (Tech N9ne album), Killer (album), Killer (atb), Killer (computer), Killer (disambiguation), Killer (game), Killer (philately), Killer (pool), Killer (video album), Killer (wrestler), Killer, The Killer (The Vampire Diaries), The Killer (comics), The Killer (play), The Killer: Wikipedia, the Free Encyclopedia [home, info]
17. Killer: Online Plain Text English Dictionary [home, info]
18. killer: Webster's Revised Unabridged, 1913 Edition [home, info]
19. killer: Rhymezone [home, info]
20. Killer: AllWords.com Multi-Lingual Dictionary [home, info]
21. killer: Free Dictionary [home, info]
22. killer: Mnemonic Dictionary [home, info]
23. killer: WordNet 1.7 Vocabulary Helper [home, info]
24. killer: LookWAYup Translating Dictionary/Thesaurus [home, info]
25. killer: Dictionary/thesaurus [home, info]
26. killer: Wikimedia Commons US English Pronunciations [home, info]
27. killer: Webster's 1828 Dictionary [home, info]

Art (1 matching dictionary)

28. Killer: Glossary of Stamp Collecting Terms [home, info]

Business (1 matching dictionary)

29. Killer (band), The Killer, killer: Legal dictionary [home, info]

Computing (1 matching dictionary)

30. Killer (band), The Killer, killer: Encyclopedia [home, info]

Medicine (2 matching dictionaries)

31. killer: online medical dictionary [home, info]
32. Killer (band), The Killer, killer: Medical dictionary [home, info]

Miscellaneous (2 matching dictionaries)

33. Killer: Brilliant Dream Dictionary [home, info]
34. killer: Idioms [home, info]

Science (1 matching dictionary)

35. KILLER: Cytokines & Cells Online Pathfinder Encyclopaedia [home, info]

Slang (3 matching dictionaries)

36. Killer: Street Terms: Drugs and the Drug Trade [home, info]
37. killer: ESL Slang page [home, info]
38. the Killer: Urban Dictionary [home, info]

Sports (1 matching dictionary)

39. Killer: Racquetball Glossary [home, info]

Tech (2 matching dictionaries)

40. Killer: AUTOMOTIVE TERMS [home, info]
41. killer: Coin Collecting [home, info]

(Note: See killers for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (killer) ▸ noun:  a difficulty that is hard to deal with ("That exam was a real killer") ▸ noun:  someone who causes the death of a person or animal ▸ noun:  predatory black-and-white toothed whale with large dorsal fin; common in cold seas ▸ noun:  the causal agent resulting in death ("Heart disease is the biggest killer in the United States") ▸ name:  A surname (very rare: popularity rank in the U.S.: #62862) ▸ Also see killers ▸ Words similar to killer ▸ Usage examples for killer ▸ Idioms related to killer (New!) ▸ Popular adjectives describing killer ▸ Words that often appear near killer ▸ Rhymes of killer ▸ Invented words related to killer