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We found 26 dictionaries with English definitions that include the word backpack:
Click on the first link on a line below to go directly to a page where "backpack" is defined.

General (24 matching dictionaries)

1. backpack: Merriam-Webster.com [home, info]
2. backpack: Oxford Learner's Dictionaries [home, info]
3. backpack: American Heritage Dictionary of the English Language [home, info]
4. backpack: Collins English Dictionary [home, info]
5. backpack: Vocabulary.com [home, info]
6. backpack: Macmillan Dictionary [home, info]
7. Backpack, backpack: Wordnik [home, info]
8. backpack: Cambridge Advanced Learner's Dictionary [home, info]
9. backpack: Wiktionary [home, info]
10. backpack: Webster's New World College Dictionary, 4th Ed. [home, info]
11. backpack: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. backpack: Infoplease Dictionary [home, info]
13. backpack: Dictionary.com [home, info]
14. backpack: UltraLingua English Dictionary [home, info]
15. backpack: Cambridge Dictionary of American English [home, info]
16. Backpack: Wikipedia, the Free Encyclopedia [home, info]
17. backpack: Rhymezone [home, info]
18. backpack: Free Dictionary [home, info]
19. backpack: Mnemonic Dictionary [home, info]
20. backpack: WordNet 1.7 Vocabulary Helper [home, info]
21. backpack: LookWAYup Translating Dictionary/Thesaurus [home, info]
22. backpack: Dictionary/thesaurus [home, info]

Computing (1 matching dictionary)

23. backpack: Encyclopedia [home, info]

Slang (1 matching dictionary)

24. The Backpack: Urban Dictionary [home, info]

(Note: See backpacks for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (backpack) ▸ noun:  a bag carried by a strap on your back or shoulder ▸ verb:  hike with a backpack ("Every summer they are backpacking in the Rockies") ▸ Also see backpacks ▸ Words similar to backpack ▸ Usage examples for backpack ▸ Idioms related to backpack (New!) ▸ Popular adjectives describing backpack ▸ Words that often appear near backpack ▸ Rhymes of backpack ▸ Invented words related to backpack