Definition of preface

• n. - Something spoken as introductory to a discourse, or written as introductory to a book or essay; a proem; an introduction, or series of preliminary remarks.
• n. - The prelude or introduction to the canon of the Mass.
• v. t. - To introduce by a preface; to give a preface to; as, to preface a book discourse.
• v. i. - To make a preface.