rainy day

1. 1.

   a (future) time of financial need

   “I am saving for a rainy day”

   Broadertime period

   trope

Questions about rainy day

What does rainy day mean?

rainy day means "a (future) time of financial need".

Is rainy day a common word?

rainy day 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.