We found 43 dictionaries that define the word can't:

General (28 matching dictionaries)

1. Cant, can't, cant: Merriam-Webster
2. Cant, can't, cant, cant: Oxford Learner's Dictionaries
3. Cant, can't, cant, cant: American Heritage Dictionary of the English Language
4. Cant, can't, cant: Collins English Dictionary
5. cant: Vocabulary.com
6. Can�t, Can't, Cant, Cant, Cant, Cant, Cant, ca'n't, can�t, can''t, can't, cant, cant, cant, cant, cant: Wordnik
7. can't, cant: Cambridge Advanced Learner's Dictionary
8. Cant, ca'n't, can't, cant: Wiktionary
9. can't, cant: Webster's New World College Dictionary, 4th Ed.
10. cant: Infoplease Dictionary
11. Can't, Cant, can't, cant: Dictionary.com
12. cant (1), cant (2): Online Etymology Dictionary
13. cant: Cambridge Essential American English Dictionary
14. CANT (aviation), CANT (disambiguation), Can't, Cant (architecture), Cant (language), Cant: Wikipedia, the Free Encyclopedia
15. Can't, Cant: Online Plain Text English Dictionary
16. can't, cant: Webster's Revised Unabridged, 1913 Edition
17. cant: Rhymezone
18. Can't, Cant: AllWords.com Multi-Lingual Dictionary
19. cant: Webster's 1828 Dictionary
20. Cant: Dictionary of Phrase and Fable (1898)
21. cant: FreeDictionary.org
22. cant: Mnemonic Dictionary
23. Cant, can't, cant: TheFreeDictionary.com
24. can't, cant: The Wordsmyth English Dictionary-Thesaurus
25. Cant, cant: Wordnik
26. cant: Longman Dictionary of Contemporary English

Art (1 matching dictionary)

27. cant-: A Cross Reference of Latin and Greek Elements

Business (1 matching dictionary)

28. cant: Legal dictionary

Computing (1 matching dictionary)

29. Cant (road/rail), Cant, cant: Encyclopedia

Medicine (1 matching dictionary)

30. cant: Merriam-Webster Medical Dictionary

Miscellaneous (3 matching dictionaries)

31. baby names list (No longer online)
32. CANT: Acronym Finder
33. AbbreviationZ (No longer online)

Slang (3 matching dictionaries)

34. cant, cant, cant, cant: Green’s Dictionary of Slang
35. cant: English slang and colloquialisms used in the United Kingdom
36. can't, cant: Urban Dictionary

Sports (1 matching dictionary)

37. Snowboarding Glossary (No longer online)

Tech (4 matching dictionaries)

38. AUTOMOTIVE TERMS (No longer online)
39. Explosives (No longer online)
40. SeaTalk Dictionary of English Nautical Language (No longer online)
41. Cant: Latitude Mexico

(Note: See canted as well.)

Definitions from Wiktionary (can't) ▸ verb:  Cannot (negative auxiliary); is unable to; does not have the ability to. ▸ verb:  Is forbidden to; is not permitted to. ▸ verb:  Often followed by be: is logically impossible. Similar: argot, tilt, inclined, pitch, slant, beveled, bank, camber, buzzword, slang, more... Opposite: verbiage, verbosity, gibberish Types: jargon, slang, argot, vernacular, colloquialism, more... Phrases: cant help, cant see, cant say, cant believe, cant stand, more... Adjectives: common, mere, religious, such, hypocritical, much, political, old, fashionable, signifi, modern ▸ Word origin ▸ Words similar to can't ▸ Usage examples for can't ▸ Idioms related to can't ▸ Wikipedia articles (New!) ▸ Words that often appear near can't ▸ Rhymes of can't ▸ Invented words related to can't