We found 24 dictionaries that define the word hot line:

General (15 matching dictionaries)

1. hot line: Merriam-Webster
2. hot line: Oxford Learner's Dictionaries
3. hot line: American Heritage Dictionary of the English Language
4. hot line: Vocabulary.com
5. Hot-line, hot-line: Wordnik
6. hot line: Wiktionary
7. hot line: The Wordsmyth English Dictionary-Thesaurus
8. hot line: Infoplease Dictionary
9. hot line: Dictionary.com
10. Hot Line (TV series), Hot Line (The Sylvers song), Hot Line (album), Hot Line (film), Hot Line (song): Wikipedia, the Free Encyclopedia
11. hot line: Rhymezone
12. hot line: AllWords.com Multi-Lingual Dictionary
13. hot line: FreeDictionary.org
14. hot line: Mnemonic Dictionary
15. hot line: TheFreeDictionary.com

Business (3 matching dictionaries)

16. Travel Industry Dictionary (No longer online)
17. hot line: Legal dictionary
18. hot line: Financial dictionary

Computing (1 matching dictionary)

19. hot line: Encyclopedia

Medicine (4 matching dictionaries)

20. hot line: Merriam-Webster Medical Dictionary
21. Dorland's Illustrated Medical Dictionary (No longer online)
22. Johnson Bwby (No longer online)
23. hot line: Medical dictionary

Slang (1 matching dictionary)

24. hot line: Urban Dictionary

(Note: See hot_lines as well.)

Definitions from Wiktionary (Hot line) ▸ noun:  Alternative spelling of hotline [A telephone line that is always staffed and able to give immediate assistance.] Similar: chat line, warm line, life-line, life line, call centre, phonecall, battle-line, batphone, call-out, endline, more... Adjectives: hold, rotary dial, touch-tone, toll-free, h, person-to-person, dial-up, call-in, touchtone, dialup, glare ▸ Words similar to hot line ▸ Usage examples for hot line ▸ Idioms related to hot line ▸ Wikipedia articles (New!) ▸ Words that often appear near hot line ▸ Rhymes of hot line ▸ Invented words related to hot line