N-COUNT [usually singular]真情实况;现实的提醒 If you say that something is a reality check for someone, you mean that it makes them recognize the truth about a situation, especially about the difficulties involved in something they want to achieve. 真情实况;现实的提醒
Jones's wise words are a timely reality check for many at the club who believe the great days are just around the corner. [+ for]