hour ( hours plural )
1 n-count An hour is a period of sixty minutes.
They waited for about two hours..., I only slept about half an hour that night., ...a twenty-four hour strike...
2 n-plural People say that something takes or lasts hours to emphasize that it takes or lasts a very long time, or what seems like a very long time., (emphasis)
Getting there would take hours.
3 n-sing A clock that strikes the hour strikes when it is exactly one o'clock, two o'clock, and so on.
4 n-sing You can refer to a particular time or moment as a particular hour.
LITERARY with supp
...the hour of his execution...
5 n-count If you refer, for example, to someone's hourof need or hourof happiness, you are referring to the time in their life when they are or were experiencing that condition or feeling.
LITERARY with supp
...the darkest hour of my professional life.
6 n-plural You can refer to the period of time during which something happens or operates each day as the hours during which it happens or operates.
...the hours of darkness..., Phone us on this number during office hours.
7 n-plural If you refer to the hours involved in a job, you are talking about how long you spend each week doing it and when you do it.
I worked quite irregular hours...
9 If you do something after hours, you do it outside normal business hours or the time when you are usually at work.
after hours phrase PHR after v, PHR n
...a local restaurant where steel workers unwind after hours...
10 If you say that something happens at all hoursof the day or night, you disapprove of it happening at the time that it does or as often as it does.
at all hours phrase PHR after v (disapproval)
She didn't want her fourteen-year-old daughter coming home at all hours of the morning.
11 If something happens in the early hours or in the small hours, it happens in the early morning after midnight.
in the early hours/in the small hours phrase
Gibbs was arrested in the early hours of yesterday morning.
12 If something happens on the hour, it happens every hour at, for example, nine o'clock, ten o'clock, and so on, and not at any number of minutes past an hour.
on the hour phrase PHR after v
13 Something that happens out of hours happens at a time that is not during the usual hours of business or work. (mainly BRIT)
out of hours phrase PHR after v, PHR n Teachers refused to run out of hours sports matches because they weren't being paid.
credit hour ( credit hours plural ) A credit hour is a credit that a school or college awards to students who have completed a course of study.
Now he needs only two credit hours to graduate.
If someone does something atthe eleventh hour, they do it at the last possible moment. n-sing usu at the N, N n
He postponed his trip at the eleventh hour., ...last night's eleventh hour agreement.
happy hour ( happy hours plural ) In a pub, happy hour is a period when drinks are sold more cheaply than usual to encourage people to come to the pub. n-var
kilowatt-hour ( kilowatt-hours plural ) A kilowatt-hour is a unit of energy that is equal to the energy provided by a thousand watts in one hour. n-count
lunch hour ( lunch hours plural ) Your lunch hour is the period in the middle of the day when you stop working, usually for one hour, in order to have a meal. n-count usu poss N
man-hour ( man-hours plural ) A man-hour is the average amount of work that one person can do in an hour. Man-hours are used to estimate how long jobs take, or how many people are needed to do a job in a particular time. n-count usu pl
The restoration took almost 4,000 man-hours over four years.
rush hour ( rush hours plural ) , rush-hour The rush hour is one of the periods of the day when most people are travelling to or from work. n-count also at/during N
During the evening rush hour it was often solid with vehicles..., Try to avoid rush-hour traffic...