Prologue

1. (n.) The preface or introduction to a discourse, poem, or performance; as, the prologue of Chaucer's Canterbury Tales; esp., a discourse or poem spoken before a dramatic performance

2. (n.) One who delivers a prologue.

3. (v. t.) To introduce with a formal preface, or prologue.

Thesaurus Entries

act, afterpiece, avant-propos, bit, breakthrough, chaser, curtain, curtain call, curtain raiser, divertimento, divertissement, epilogue, exode, exodus, exordium, expository scene, finale, foreword, front matter, frontispiece, hoke act, innovation, interlude, intermezzo, intermission, introduction, leap, number, overture, postulate, preamble, preface, prefix, prefixture, preliminary, prelude, premise, presupposition, proem, prolegomena, prolegomenon, prolepsis, protasis, routine, scene, shtick, sketch, skit, song and dance, stand-up comedy act, striptease, turn, verse, voluntary