Noun
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 very painful acute local inflammation of the subcutaneous tissue, esp. of the trunk or back of the neck, characterized by brawny hardness of the affected parts, sloughing of the skin and deeper tissues, and marked constitutional depression. It differs from a boil in size, tendency to spread, and the absence of a central core, and is frequently fatal. It is also called anthrax.
A charge or bearing supposed to represent the precious stone. It has eight scepters or staves radiating from a common center. Called also escarbuncle.
Source: Webster's dictionaryThou art a boil, a plague sore, an embossed carbuncle in my corrupted blood. William Shakespeare
The architect, Peter Arens who is the monstrous carbuncle architect, not merely did his design which had won a public competition never get built but his practice suffered financially for some years. Anthony Holden
By modern standards, much of the plot is no more rational than the idea that a priceless garnet would end up inside a Christmas goose in the Sherlock Holmes tale “The Adventure of the Blue Carbuncle.” Source: Internet