hemacite

Century Dictionary and Cyclopedia

1. n. A plastic material, a substitute for horn, made from blood with the addition of sundry vegetable and mineral materials.

Wiktionary

1. n. A material made from sawdust and the blood of slaughtered animals, used in the late nineteenth century for doorknobs, buttons, etc.

GNU Webster's 1913

1. n. A composition made from blood, mixed with mineral or vegetable substances, used for making buttons, door knobs, etc.