a period of time equal to a twenty-fourth part of a day and night and divided into 60 minutes
the time of day at which an attack, landing, or other military operation is scheduled to begin
an hour regarded in terms of the amount of work that can be done by one person within this period
a measure of electrical energy equivalent to a power consumption of one watt for one hour
the time at which a planned operation, typically a military one, is set to begin
a period in the evening during which many children and their families watch television, especially 8 to 9 p.m.
the first hour after a traumatic injury, when emergency treatment is most likely to be successful
a period of the day when drinks are sold at reduced prices in a bar or other licensed establishment
a period in the middle of the day, when people stop work to have lunch
a measure of electrical energy equivalent to a power consumption of one thousand watts for one hour
a period in school set aside for developing reading skills, introduced as a daily requirement in English primary schools in 1998
at an exact hour, or at the beginning of each hour, of the day or night
daily (or hourly etc.); as the days (or hours etc.) pass
midnight (with reference to the belief that witches are active and magic takes place at that time)
postpone something unpleasant for as long as possible
a method of measuring the time based on the full twenty-four hours of the day, rather than dividing it into two units of twelve hours
a timing device with two connected glass bulbs containing sand that takes an hour to pass from the upper to the lower bulb
when things seem to be at their worst they are about to start improving
a period of fifteen minutes