CHANCE ON / UPON SB/STH


Meaning of CHANCE ON / UPON SB/STH in English

( formal ) to find or meet sb/sth unexpectedly or by chance :

One day he chanced upon Emma's diary and began reading it.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.