A beautiful gem of a deep red color (with a mixture of scarlet) called by the Greeks anthrax; found in the East Indies. When held up to the sun, it loses its deep tinge, and becomes of the color of burning coal. The name belongs for the most part to ruby sapphire, though it has been also given to red spinel and garnet.
- A painful localized bacterial infection of the skin and subcutaneous tissue that usually has several openings through which pus is discharged.
- A deep-red garnet, unfaceted and convex.
- Obsolete A red precious stone.