Definify.com
Webster 1913 Edition
Creaser
Creas′er
(kr?s′?r)
, Noun.
1.
A tool, or a sewing-machine attachment, for making lines or creases on leather or cloth, as guides to sew by.
2.
A tool for making creases or beads, as in sheet iron, or for rounding small tubes.
3.
(Bookbinding)
A tool for making the band impression distinct on the back.
Knight.