cinnabar

Adjective

• of a vivid red to reddish-orange color

Noun

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

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

Related words

• Synonyms: 
  vermilion , vermillion , Chinese-red , cinnabar moth , Callimorpha jacobeae