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We found 65 dictionaries with English definitions that include the word jam:
Click on the first link on a line below to go directly to a page where "jam" is defined.

General (34 matching dictionaries)

1. Jam, Jam, jam: Dictionary.com [home, info]
2. jam (n.), jam (v.): Online Etymology Dictionary [home, info]
3. jam: UltraLingua English Dictionary [home, info]
4. jam: Cambridge Dictionary of American English [home, info]
5. jam: Cambridge International Dictionary of Idioms [home, info]
6. JAM, JAM, Jam (Michael Jackson song), Jam (TV series), Jam (Turn It Up), Jam (album), Jam (disambiguation), Jam (film), Jam (music), Jam (novel), Jam (song), Jam (tv series), Jam, Jam, The Jam (Comics), The Jam (band), The Jam (production team), The Jam, The jam: Wikipedia, the Free Encyclopedia [home, info]
7. Jam: Online Plain Text English Dictionary [home, info]
8. jam: Webster's Revised Unabridged, 1913 Edition [home, info]
9. jam: Rhymezone [home, info]
10. jam, jam (de): AllWords.com Multi-Lingual Dictionary [home, info]
11. jam: Webster's 1828 Dictionary [home, info]
12. Jam: Britih-American Dictionary [home, info]
13. JAM: Stammtisch Beau Fleuve Acronyms [home, info]
14. jam: All About Homonyms [home, info]
15. jam: Free Dictionary [home, info]
16. jam: Mnemonic Dictionary [home, info]
17. jam: WordNet 1.7 Vocabulary Helper [home, info]
18. jam: LookWAYup Translating Dictionary/Thesaurus [home, info]
19. Jam, jam: Dictionary/thesaurus [home, info]
20. jam: Wikimedia Commons US English Pronunciations [home, info]
21. Jam, jam: Merriam-Webster.com [home, info]
22. Jam, jam, jam, jam: Oxford Dictionaries [home, info]
23. jam, jam: American Heritage Dictionary of the English Language [home, info]
24. Jam, jam: Collins English Dictionary [home, info]
25. jam: Vocabulary.com [home, info]
26. jam, jam: Macmillan Dictionary [home, info]
27. Jam, jam: Wordnik [home, info]
28. jam: Cambridge Advanced Learner's Dictionary [home, info]
29. Jam, jam: Wiktionary [home, info]
30. jam: Webster's New World College Dictionary, 4th Ed. [home, info]
31. jam: The Wordsmyth English Dictionary-Thesaurus [home, info]
32. jam: Infoplease Dictionary [home, info]

Art (3 matching dictionaries)

33. jam: Epicurus.com Spanish Glossary [home, info]
34. Jam: Cooking Dictionary [home, info]
35. Jam: Jazz Humor [home, info]

Business (1 matching dictionary)

36. jam: Legal dictionary [home, info]

Computing (5 matching dictionaries)

37. JaM, jam: Free On-line Dictionary of Computing [home, info]
38. JAM: Netlingo [home, info]
39. JAM: CCI Computer [home, info]
40. JAM: SMS Dictionary [home, info]
41. Jam (music), jam: Encyclopedia [home, info]

Medicine (2 matching dictionaries)

42. JaM, jam: online medical dictionary [home, info]
43. jam: Medical dictionary [home, info]

Miscellaneous (5 matching dictionaries)

44. Jam: Brilliant Dream Dictionary [home, info]
45. JAM: Acronym Finder [home, info]
46. JAM: Three Letter Words with definitions [home, info]
47. JAM: AbbreviationZ [home, info]
48. jam: Idioms [home, info]

Science (3 matching dictionaries)

49. Jam: Archaeology Wordsmith [home, info]
50. Jam: A Glossary of Mathematical Terms [home, info]
51. JAM: Cytokines & Cells Online Pathfinder Encyclopaedia [home, info]

Slang (6 matching dictionaries)

52. Jam: Totally Unofficial Rap [home, info]
53. Jam: Street Terms: Drugs and the Drug Trade [home, info]
54. jam: The Folk File [home, info]
55. Jam: 1960's Slang [home, info]
56. jam: ESL Slang page [home, info]
57. Jam: Twists, Slugs and Roscoes: Hardboiled Slang [home, info]

Sports (5 matching dictionaries)

58. Jam: Dan's Poker [home, info]
59. Jam: Croquet [home, info]
60. Jam, jam: Hickok Sports Glossaries [home, info]
61. Jam: 2060 Shadow-Slang [home, info]
62. Jam: Poker Terms [home, info]

Tech (1 matching dictionary)

63. Jam: AUTOMOTIVE TERMS [home, info]

(Note: See jams for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (jam) ▸ noun:  preserve of crushed fruit ▸ noun:  a dense crowd of people ▸ noun:  deliberate radiation or reflection of electromagnetic energy for the purpose of disrupting enemy use of electronic devices or systems ▸ noun:  informal terms for a difficult situation ▸ verb:  interfere with or prevent the reception of signals ("Jam the Voice of America") ▸ verb:  crush or bruise ("Jam a toe") ▸ verb:  crowd or pack to capacity ("The theater was jampacked") ▸ verb:  get stuck and immobilized ("The mechanism jammed") ▸ verb:  push down forcibly ("The driver jammed the brake pedal to the floor") ▸ verb:  press tightly together or cram ▸ verb:  block passage through ▸ Also see jams ▸ Word origin ▸ Words similar to jam ▸ Usage examples for jam ▸ Popular adjectives describing jam ▸ Words that often appear near jam ▸ Rhymes of jam ▸ Invented words related to jam