to think of, find or notice sth, especially by chance :
Eventually, we alighted on the idea of seeking sponsorship.
Her eyes suddenly alighted on the bundle of documents.
to think of, find or notice sth, especially by chance :
Eventually, we alighted on the idea of seeking sponsorship.
Her eyes suddenly alighted on the bundle of documents.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005