to think about a future event with pleasure or excitement and count the minutes, days, etc. until it happens :
She's already counting down to the big day.
—related noun countdown
to think about a future event with pleasure or excitement and count the minutes, days, etc. until it happens :
She's already counting down to the big day.
—related noun countdown
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005