Meaning of chapbook

chap•book

Pronunciation: (chap'book"), [key]
— n.
  1. a small book or pamphlet of popular tales, ballads, etc., formerly hawked about by chapmen.
  2. a small book or pamphlet, often of poetry.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.