event

An occurrence; something that happens.

A prearranged social activity (function, etc.)

One of several contests that combine to make up a competition.

An end result; an outcome (now chiefly in phrases).

(physics) A point in spacetime having three spatial coordinates and one temporal coordinate.

(computing) A possible action that the user can perform that is monitored by an application or the operating system (event listener). When an event occurs an event handler is called which performs a specific task.

(probability theory) A set of some of the possible outcomes; a subset of the sample space.

(obsolete) An affair in hand; business; enterprise.

(medicine) An episode of severe health conditions.