=Weft.= The threads running crosswise in cloth. Also called woof, and filling.
=Whipping=, or =whipst.i.tching=. See Overcasting.
=Whole bound.= Term indicating that a book is bound in full leather. See also Full bound.
=Wire sewing.= Sewing the signatures of a book to cloth by means of wire staples driven through their centers.
=Wired.= Pamphlets held together by wire staples driven through and clinched near the back edge, are said to be wired.
=Witness.= The leaves of a book which show the original size of the sheet, although other sheets have been trimmed, are a witness to the fact that the book has not been cut down.
=Woof.= See Weft.