Answer:

buckram

Answer	Crossword Clue
BUCKRAM	Cloth used for bookbinding.
BUCKRAM	Bookbinder's material.
BUCKRAM	Stiff fabric for lining

BUCKRAM	Interlining stiffener
BUCKRAM	Bookbinder's fabric

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.