1.
to fix all your attention on the person or thing mentioned :
They zeroed in on the key issues.
2.
to aim guns, etc. at the person or thing mentioned
1.
to fix all your attention on the person or thing mentioned :
They zeroed in on the key issues.
2.
to aim guns, etc. at the person or thing mentioned
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005