Noun
a (future) time of financial need
Source: WordNetSave a boyfriend for a rainy day - and another, in case it doesn't rain. Mae West
I shall stay no longer than to wish him a rainy day to read this... discourse and that if he be an honest angler, the east wind may never blow when he goes a-fishing. Izaak Walton
Friends: not one. Just a few acquaintances who imagine they feel something for me and who might be sorry if a train ran over me and the funeral was on a rainy day. Fernando Pessoa
On a rainy day many offer to water the chickens. Armenian Proverb
A rainy day is not a day for children. Irish Proverb
Put by for a rainy day. Egyptian Proverb