prologue
pro.logue \'pro--.lo.g, -.la:g\ n [ME prolog, fr. OF prologue, fr. L prologus preface to a play], fr. Gk prologos part of a Greek play preceding the entry of the chorus, fr. pro- before + legein to speak - more at PRO-, LEGEND 1: the preface or introduction (as to a discourse or play) 2: the actor speaking a prologue 3: an introductory or preceding act, event, or development