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  1  definition  found 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
  Covelline  \Co*vel"line\  (k?-v?l"l?n),  Covellite  \Co*vel"lite\ 
  (-l?t),  n.  [After  Covelli  the  discoverer.]  (Min.) 
  A  native  sulphide  of  copper,  occuring  in  masses  of  a  dark 
  blue  color;  --  hence  called  {indigo  copper}.