rain date

1. 1.

   an alternative date set for some outdoor event in case it rains on the appointed date

   “the rain date for the picnic will be the following Sunday”

   Broaderdate

Questions about rain date

What does rain date mean?

rain date means "an alternative date set for some outdoor event in case it rains on the appointed date".

Is rain date a common word?

rain date is banded "Uncommon" — turns up in careful writing rather than conversation. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.