cinnabar
cin-na-bar
noun
A bright red mineral, mercuric sulphide, used as a pigment and source of mercury.
"The cinnabar ore was mined for its mercury content."
noun
A brilliant, vivid red colour, resembling the hue of the mineral.
"She wore a dress in a striking cinnabar shade."
Thesaurus
Synonyms: Callimorpha jacobeae, cinnabar moth, chromatic, vermillion, Chinese-red, vermilion