noun

• (figurative, uncommon, dated) A remarkable person.
  "Miss Burton, you are an event! Sleepy, old Lymston's going to love you! Bye-bye. Bye."
• (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.
  "If X is a random variable representing the toss of a six-sided die, then its sample space could be denoted as {1,2,3,4,5,6}. Examples of events could be: X=1, X=2, X>5,X̸=4, and X isin 1,3,5."

verb

• (obsolete) To occur, take place.
  "1590, Robert Greene, Greene’s Never Too Late, in The Life and Complete Works in Prose and Verse of Robert Greene, Volume 8, Huff Library, 1881, p. 33, […] I will first rehearse you an English Historie acted and evented in my Countrey of England […]"

verb

• (obsolete, intransitive) To be emitted or breathed out; to evaporate.
  "c. 1597, Ben Jonson, The Case is Altered, Act V, Scene 8, in C. H. Herford and Percy Simpson (editors), Ben Jonson, Volume 3, Oxford: Clarendon Press, 1927, p. 178, ô that thou sawst my heart, or didst behold The place from whence that scalding sigh evented."
• (obsolete, transitive) To expose to the air, ventilate.
  "1559, attributed to William Baldwin, “How the Lorde Clyfford for his straunge and abhominable cruelty came to as straunge and sodayne a death” in The Mirror for Magistrates, Part III, edited by Joseph Haslewood, London: Lackington, Allen & Co., 1815, Volume 2, p. 198, For as I would my gorget have undon To event the heat that had mee nigh undone, An headles arrow strake mee through the throte, Where through my soule forsooke his fylthy cote."