{adv. phr.} Sometime before now, long ago. * /Once upon a time she was thought to be the most talented actress in the country./ - Often used at the beginning of fairy stories. * /Once upon a time there lived a king who had an ugly daughter./
ONCE UPON A TIME
Meaning of ONCE UPON A TIME in English
Dictionary of English idioms . Словарь английских идиом. 2012