(informal) The very early morning, just after midnight, when most people are asleep.

(informal) Until very late; until the small hours.

plural of zero-hours contract

plural of triple witching hour

(chiefly US) An event, particularly on radio or television, showcasing the talents of amateur performers.

(units of measure) A unit of time reckoned as ¹⁄₁₂ of a day's daylight or nighttime, varying according to season, latitude, and local weather.

A unit of electrical energy equal to that done by one terawatt acting for one hour.

Dinnertime, the hour in which the dinner meal takes place. / (Britain) The midday break in British schools (some areas), lunchtime.

suppertime, the hour in which the supper meal takes place.

A man who has recently caught the attention of, or is being admired or honoured by, a large number of people.