"Empowering Advanced Learners of English in Business and Academia - TOEFL / ESL / EFL"
A polite way to decline a social invitation, usually with the intent of accepting at a later date.
Context : Business
The literal meaning of "rain check" is a certificate from a store which states that a customer can return at a later date to purchase an out-of-stock item at the advertised price.
Usage of “rain check”
Thanks for inviting me to the movie with you guys, but I'll need to take a rain check. I'll go with you all next time.
Michael got rain check for the jacket at the department store.
Examples of idiom “rain check” from Twitter