vi to make a preface.
2. preface ·noun the prelude or introduction to the canon of the mass.
3. preface ·vt to introduce by a preface; to give a preface to; as, to preface a book discourse.
4. preface ·noun 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.