We found 14 dictionaries that define the word rain out:

General (11 matching dictionaries)

1. rain out: Merriam-Webster
2. rain out: Vocabulary.com
3. rain-out: Wordnik
4. rain out: Wiktionary
5. rain-out, rain out: Dictionary.com
6. rain out: Rhymezone
7. rain out: FreeDictionary.org
8. rain out: Mnemonic Dictionary
9. rain out: TheFreeDictionary.com

Miscellaneous (1 matching dictionary)

10. rain out: Idioms

Slang (1 matching dictionary)

11. Rain Out: Urban Dictionary

Tech (1 matching dictionary)

12. Glossary of Meteorology (No longer online)

(Note: See rain_outs as well.)

Definitions from Wiktionary (rain out) ▸ verb:  (of a game, match, picnic, etc) To be cancelled due to rain. Similar: wash out, rain off, raincheck, redrain, pour down, rain on someone's parade, come down, rain on one's parade, wind off, make down, more... Opposite: clear up, stop raining, dry up, become sunny Types: drizzle, downpour, deluge, rainstorm, cloudburst, more... ▸ Words similar to rain out ▸ Usage examples for rain out ▸ Idioms related to rain out ▸ Wikipedia articles (New!) ▸ Words that often appear near rain out ▸ Rhymes of rain out ▸ Invented words related to rain out