cro·cus /ˈkrokəs/
  番紅花屬,番紅花,磨粉
  cro·cus /ˈkrokəs/ 名詞
  藏紅花
  Cro·cus n.
  1. Bot. A genus of iridaceous plants, with pretty blossoms rising separately from the bulb or corm. Crocus vernus is one of the earliest of spring-blooming flowers; Crocus sativus produces the saffron, and blossoms in the autumn.
  2. Chem. A deep yellow powder; the oxide of some metal calcined to a red or deep yellow color; esp., the oxide of iron (Crocus of Mars or colcothar) thus produced from salts of iron, and used as a polishing powder.
  Crocus of Venus Old Chem., oxide of copper.
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  crocus
       n : any of numerous low-growing plants of the genus Crocus
           having slender grasslike leaves and white or yellow or
           purple flowers; native chiefly to the Mediterranean
           region but widely cultivated