Meaning

noun a heavy reddish mineral consisting of mercuric sulfide; the chief source of mercury

noun large red-and-black European moth; larvae feed on leaves of ragwort; introduced into United States to control ragwort

adjective of a vivid red to reddish-orange color

originFirst attested in the mid-15th century. From Middle English cynabare, from Old French cinabre, from Latin cinnabaris, from Ancient Greek κιννάβαρι (kinnábari), of unknown origin.

Etymology from Wiktionary, CC BY-SA 3.0