n a white powder (LiCO3) used in manufacturing glass and ceramics and as a drug; the drug (trade names Lithane or Lithonate or Eskalith) is used to treat some forms of depression and manic episodes of manic-depressive disorder
n a member of a people inhabiting the Arctic (northern Canada or Greenland or Alaska or eastern Siberia); the Algonquians called them Eskimo (`eaters of raw flesh') but they call themselves the Inuit (`the people')