1. a bright red mineral that is the chief ore of mercury
2. a bright red or vermillion color

Examples

• The miners discovered a rich vein of cinnabar in the mountain.
• Ancient Chinese artists prized cinnabar for its brilliant red pigment.
• Mercury is extracted from cinnabar through heating and distillation.
• The pottery was decorated with cinnabar-colored glaze.
• Cinnabar deposits are found in volcanic regions around the world.
• The artist mixed cinnabar powder to create the perfect shade of red.