ˈrush hour BrE AmE noun [uncountable and countable]
the time of day when the roads, buses, trains etc are most full, because people are travelling to or from work:
I got caught in the morning rush hour.
heavy rush hour traffic
ˈrush hour BrE AmE noun [uncountable and countable]
the time of day when the roads, buses, trains etc are most full, because people are travelling to or from work:
I got caught in the morning rush hour.
heavy rush hour traffic
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012