HALF-HOUR
Meaning of HALF-HOUR in English
(also ˌhalf an ˈhour ) noun
a period of 30 minutes :
He should arrive within the next half-hour.
a half-hour drive
Oxford Advanced Learner's English Dictionary.
Оксфордский английский словарь для изучающик язык на продвинутом уровне.
2005