1. a period of time equal to 60 minutes
2. a particular time of day
3. a time or period characterized by particular events or conditions

Examples

• The meeting lasted for two hours.
• What hour does the store close?
• She works eight hours a day.
• The lunch hour is from noon to 1 PM.
• This was his finest hour.
• We’re open 24 hours a day.
• The early morning hours are peaceful.