HAVE ONE EYE / HALF AN EYE ON STH


Meaning of HAVE ONE EYE / HALF AN EYE ON STH in English

to look at or watch sth while doing sth else, especially in a secret way so that other people do not notice :

During his talk, most of the delegates had one eye on the clock.

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