D defs.my
Entry 2 senses Webster, 1913

Book muslin

/bo͝ok mŭz'-lən/ · Book· mus·lin · IPA
01 A kind of muslin used for the covers of books.
  1. 1.
    A kind of muslin used for the covers of books.
  2. 2.
    A kind of thin white muslin for ladies' dresses.