A substance such as chalk, ash, powdered bone, bread crumbs, or pumice that is rubbed into a writing surface in order to improve it. Pounce can reduce greasiness, raise the nap, and whiten parchment. The term is also used for a post-medieval technique employed in the transfer of an image.

Michelle Brown

Michelle Brown, Understanding Illuminated Manuscripts (Malibu, CA: J. Paul Getty Museum in association with the British Library, c1994).