We found 25 dictionaries that define the word hot tub:

General (19 matching dictionaries)

1. hot-tub, hot tub: Merriam-Webster
2. hot tub: Oxford Learner's Dictionaries
3. hot tub: American Heritage Dictionary of the English Language
4. hot tub: Collins English Dictionary
5. hot tub: Vocabulary.com
6. hot-tub: Wordnik
7. hot tub: Cambridge Advanced Learner's Dictionary
8. hot-tub, hot tub: Wiktionary
9. hot tub: The Wordsmyth English Dictionary-Thesaurus
10. hot tub: Infoplease Dictionary
11. hot tub: Dictionary.com
12. Hot Tub (Drawn Together episode), Hot tub (disambiguation), Hot tub, The Hot Tub: Wikipedia, the Free Encyclopedia
13. hot tub: FreeDictionary.org
14. hot tub: Mnemonic Dictionary
15. hot tub: TheFreeDictionary.com
16. hot tub: Rhymezone
17. hot tub: Longman Dictionary of Contemporary English

Business (2 matching dictionaries)

18. Construction Term Glossary (No longer online)
19. Hot tub: Energy Dictionary

Medicine (1 matching dictionary)

20. hot tub: Medical dictionary

Miscellaneous (1 matching dictionary)

21. Brilliant Dream Dictionary (No longer online)

Slang (1 matching dictionary)

22. Hot Tub: Urban Dictionary

Tech (1 matching dictionary)

23. Pool Glossary (No longer online)

(Note: See hot_tubs as well.)

Definitions from Wiktionary (hot tub) ▸ noun:  (chiefly US) A large tub, often situated outdoors, filled with hot water and used for communal leisure bathing. Similar: jacuzzi, bath, bath tub, bathtub, swimming bath, bathhouse, bath-house, hothouse, bathing box, sauna, more... Opposite: cold pool, ice bath, frigid water Phrases: Hot tub folliculitis, hot tub lung, Hot Tub Time Machine, Hot Tub Time Machine 2, The Hot Tub, more... Adjectives: bain, showery, hydro, well, washen, swelly, water cooler, steaming, dun, grit, watered ▸ Words similar to hot tub ▸ Usage examples for hot tub ▸ Idioms related to hot tub ▸ Wikipedia articles (New!) ▸ Words that often appear near hot tub ▸ Rhymes of hot tub ▸ Invented words related to hot tub