Something that happens.
A spontaneous or improvised event, especially one that involves audience participation.
Trendy, up-to-the-minute.
Busy, lively; vibrant, dynamic; fashionable.
The time when something happens.
The synchronization of the firing of the spark plugs in an internal combustion engine.
The regulation of the pace of e.g. an athletic race, the speed of an engine, the delivery of a joke, or the occurrence of a series of events.
An instance of recording the time of something.