We found 23 dictionaries that define the word fire hydrant:

General (19 matching dictionaries)

1. fire hydrant: Merriam-Webster
2. fire hydrant: American Heritage Dictionary of the English Language
3. fire hydrant: Collins English Dictionary
4. fire hydrant: Vocabulary.com
5. fire hydrant: Wordnik
6. fire hydrant: Cambridge Advanced Learner's Dictionary
7. fire hydrant: Wiktionary
8. fire hydrant: The Wordsmyth English Dictionary-Thesaurus
9. fire hydrant: Infoplease Dictionary
10. fire hydrant: Dictionary.com
11. Fire hydrant: Wikipedia, the Free Encyclopedia
12. fire hydrant: Rhymezone
13. fire hydrant: Stammtisch Beau Fleuve Acronyms
14. fire hydrant: FreeDictionary.org
15. fire hydrant: Mnemonic Dictionary
16. fire hydrant: TheFreeDictionary.com
17. fire hydrant: Longman Dictionary of Contemporary English

Business (1 matching dictionary)

18. Construction Term Glossary (No longer online)

Computing (1 matching dictionary)

19. fire hydrant: Encyclopedia

Science (1 matching dictionary)

20. fire hydrant: LITTLE EXPLORERS(TM) Picture Dictionary

Slang (1 matching dictionary)

21. Fire Hydrant: Urban Dictionary

(Note: See fire_hydranting as well.)

Definitions from Wiktionary (fire hydrant) ▸ noun:  (firefighting) A device used by firefighters to obtain water from the main supply, consisting of a barrel, connections for hose and a valve assembly. Similar: fireplug, plug, fire main, fire hose, firehose, firewater, fire alarm, fire department, fire brigade, firewagon, more... Opposite: fire plug, water post, fire valve Phrases: fire hydrant attachments, more... Adjectives: flue, steam, draft, piping, male, overfire, gas, fire, kindling, firewise, hood ▸ Words similar to fire hydrant ▸ Usage examples for fire hydrant ▸ Idioms related to fire hydrant ▸ Wikipedia articles (New!) ▸ Words that often appear near fire hydrant ▸ Rhymes of fire hydrant ▸ Invented words related to fire hydrant