( BrE , informal ) good things that are promised for the future but never happen :
They refused to settle for a promise of jam tomorrow.
( BrE , informal ) good things that are promised for the future but never happen :
They refused to settle for a promise of jam tomorrow.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005