We found 10 dictionaries that define the word contrails:

General (8 matching dictionaries)

1. contrails: Merriam-Webster
2. contrails: Collins English Dictionary
3. contrails: Vocabulary.com
4. Contrails, contrails: Wordnik
5. contrails: Wiktionary
6. contrails: Dictionary.com
7. Contrails (book), Contrails: Wikipedia, the Free Encyclopedia
8. Contrails: TheFreeDictionary.com

Computing (1 matching dictionary)

9. Contrails: Encyclopedia

Miscellaneous (1 matching dictionary)

10. contrails: The Skeptic's Dictionary

(Note: See contrail as well.)

Definitions from Wikipedia (Contrails) ▸ noun:  a small handbook issued to new cadets entering the United States Air Force Academy. ▸ Words similar to contrails ▸ Usage examples for contrails ▸ Idioms related to contrails ▸ Wikipedia articles (New!) ▸ Popular adjectives describing contrails ▸ Words that often appear near contrails ▸ Rhymes of contrails ▸ Invented words related to contrails