half hour
/ˈhæfˌaʊər/
noun
- A period of 30 minutes.
- I'll meet you in a half-hour at the coffee shop.
- The bus comes every half-hour during rush hour.
- She waited for a half-hour before the doctor called her name.
adjective
- Lasting or occurring every 30 minutes.
- The half-hour news update comes on at 12:30.
- We have a half-hour lunch break at work.
- She set a half-hour timer for her study session.