We found 24 dictionaries that define the word hummingbird:

General (21 matching dictionaries)

1. hummingbird: Merriam-Webster
2. hummingbird: Oxford Learner's Dictionaries
3. hummingbird: American Heritage Dictionary of the English Language
4. hummingbird: Collins English Dictionary
5. hummingbird: Vocabulary.com
6. Hummingbird, hummingbird: Wordnik
7. hummingbird: Cambridge Advanced Learner's Dictionary
8. hummingbird: Wiktionary
9. hummingbird: Webster's New World College Dictionary, 4th Ed.
10. hummingbird: The Wordsmyth English Dictionary-Thesaurus
11. hummingbird: Infoplease Dictionary
12. hummingbird: Dictionary.com
13. hummingbird: Cambridge Essential American English Dictionary
14. Hummingbird (Local Natives album), Hummingbird (Seals & Crofts song), Hummingbird (Seals and Crofts song), Hummingbird (band), Hummingbird (comics), Hummingbird (disambiguation), Hummingbird (film), Hummingbird (song), Hummingbird: Wikipedia, the Free Encyclopedia
15. hummingbird: Rhymezone
16. hummingbird: FreeDictionary.org
17. hummingbird: Mnemonic Dictionary
18. hummingbird: TheFreeDictionary.com
19. hummingbird: Wikimedia Commons US English Pronunciations

Computing (1 matching dictionary)

20. hummingbird: Encyclopedia

Miscellaneous (1 matching dictionary)

21. Brilliant Dream Dictionary (No longer online)

Slang (1 matching dictionary)

22. hummingbird: Urban Dictionary

(Note: See hummingbirds as well.)

Definitions from Wiktionary ( ) ▸ noun:  Any of various small American birds in the family Trochilidae that have the ability to hover. Similar: humming bird, humming-bird, hoverfly, bumblebird, hummingbird hawkmoth, hummingbird moth, hawkmoth, trochilus, swallow, trochilid, more... Opposite: ostrich, emu, cassowary, kiwi Types: ruby-throated, Anna's, rufous, broad-tailed, black-chinned, calliope, Allen's, Costa's, buff-bellied, more... Phrases: Rufous hummingbird, bee hummingbird, Calliope hummingbird, hummingbird moth, hummingbird moths, more... Adjectives: throated, rufous, tiny, little, tailed, chinned, male, female, giant, green, small Colors:     emerald,     turquoise,     ruby,     sapphire,     amethyst, more... ▸ Words similar to hummingbird ▸ Usage examples for hummingbird ▸ Idioms related to hummingbird ▸ Wikipedia articles (New!) ▸ Popular adjectives describing hummingbird ▸ Words that often appear near hummingbird ▸ Rhymes of hummingbird ▸ Invented words related to hummingbird