Meaning & Definition
noun
A unit of time equal to 60 minutes.
The meeting will last for one hour.
A specific time of day.
We agreed to meet at three o'clock in the afternoon, or at the third hour.
A period of time defined by a particular activity or event.
She devoted an hour each day to studying for her exams.
A period of time when something happens or is open.
The store's opening hours are from 9 AM to 9 PM.
Etymology
Middle English 'oure', from Old French 'ore', derived from Latin 'hora'.
Common Phrases and Expressions
happy hour:
A period during which drinks are sold at reduced prices.
rush hour:
A time during the day when traffic is heavy.
zero hour:
The time at which a significant event is scheduled to begin.
Slang Meanings
O'Clock
I'll meet you at 3 o'clock.
Houry
It took an houry to finish that task.