( informal , especially NAmE ) to refuse an offer or invitation but say that you might accept it later :
'Are you coming for a drink?' 'Can I take a rain check?—I must get this finished tonight.'
( informal , especially NAmE ) to refuse an offer or invitation but say that you might accept it later :
'Are you coming for a drink?' 'Can I take a rain check?—I must get this finished tonight.'
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005