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Webster 1913 Edition

Noun.

[See

to cheapen.]

Any small book carried about for sale by chapmen or hawkers. Hence, any small book; a toy book.

Noun.

[See Chapman and Cheap.] a small book or pamphlet, carried about for sale by hawker.

chapbook ‎(plural chapbooks)

A small book, usually made from a single sheet, folded several times, containing poems, ballads or religious tracts
- 1849 Notices of Fugitive Tracts: And Chap-books Printed at Aldermary Churchyard, Bow Churchyard, Etc
  This was, till within the last few years, a favourite chapbook in the north of England.
- 2005 Kathryn A. Lowry - The Tapestry of Popular Songs in 16th- and 17th Century China
  Two such examples of slim, chapbook-style collections were both part of larger compendia . . .