Alternative form of zero-hour contract

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

Alternative form of until all hours

plural of triple witching hour

(electricity) A unit of energy equal to that done by one kilowatt acting for one hour.

The scheduled time for the start of some event, especially a military operation; H-hour.

(idiomatic) A point in time which is nearly too late; the last minute.

The three-hour intervals of daytime religious services appointed by canon law. / (Christianity) The divine office or prayers appointed to each of these times of day.

Of or pertaining to the rush hour.

A period of time equal to thirty minutes, half an hour. / The time of thirty minutes past any particular hour.