heatwave

noun
UK /ˈhiːt.weɪv/
US /ˈhiːt.weɪv/

A heatwave is a long time when the weather is very, very hot.

We stayed inside during the heatwave and drank lots of water.


OTHER MEANINGS

2. A period of unusually hot weather that can be dangerous to health.

The heatwave sent temperatures above 40 degrees for a week.

3. A sudden, intense burst of heat from a device or source.

A heatwave blasted from the open oven door.

4. A wave of strong popular excitement or activity.

A heatwave of interest swept through the town after the concert.