We found 26 dictionaries that define the word airline:

General (22 matching dictionaries)

1. airline: Merriam-Webster
2. airline: Oxford Learner's Dictionaries
3. airline: American Heritage Dictionary of the English Language
4. airline: Collins English Dictionary
5. airline: Vocabulary.com
6. Airline, airline: Wordnik
7. airline: Cambridge Advanced Learner's Dictionary
8. airline: Wiktionary
9. airline: Webster's New World College Dictionary, 4th Ed.
10. airline: The Wordsmyth English Dictionary-Thesaurus
11. airline: Dictionary.com
12. airline: Cambridge Essential American English Dictionary
13. Airline (American TV series), Airline (TV), Airline (TV series), Airline (U.S. TV series), Airline (UK TV series), Airline (brand), Airline (disambiguation), Airline (guitar), Airline: Wikipedia, the Free Encyclopedia
14. airline: Rhymezone
15. airline: AllWords.com Multi-Lingual Dictionary
16. airline: FreeDictionary.org
17. airline: Mnemonic Dictionary
18. airline: TheFreeDictionary.com
19. airline: Longman Dictionary of Contemporary English
20. airline: Merriam-Webster

Business (2 matching dictionaries)

21. Travel Industry Dictionary (No longer online)
22. airline: Legal dictionary

Computing (1 matching dictionary)

23. The Airline, airline: Encyclopedia

Slang (1 matching dictionary)

24. airline: Urban Dictionary

(Note: See airlines as well.)

Definitions from Wiktionary ( ) ▸ noun:  A company that flies airplanes to transport people and goods. Similar: airway, airline business, air carrier, airliner, carrier, air transport, plane, air line, airlifter, aero, more... Opposite: railway Types: Southwest, United, American, Delta, Alaska, JetBlue, Spirit, Frontier, Virgin America, Hawaiian, more... Phrases: airline industry, airline tickets, airline pilots, airline ticket, airline pilot, more... Adjectives: national, major, commercial, first, international, new, largest, own, domestic, small, only Colors:     blue,     red,     white,     silver,     gold, more... ▸ Words similar to airline ▸ Usage examples for airline ▸ Idioms related to airline ▸ Wikipedia articles (New!) ▸ Popular adjectives describing airline ▸ Words that often appear near airline ▸ Rhymes of airline ▸ Invented words related to airline