DICT.TW Dictionary Taiwan

 spi·nel /spəˈnɛl/
 尖晶石

 Spi·nel Spi·nelle n.  Min. A mineral occuring in octahedrons of great hardness and various colors, as red, green, blue, brown, and black, the red variety being the gem spinel ruby. It consist essentially of alumina and magnesia, but commonly contains iron and sometimes also chromium.
 Note: ☞ The spinel group includes spinel proper, also magnetite, chromite, franklinite, gahnite, etc., all of which may be regarded as composed of a sesquioxide and a protoxide in equal proportions.
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 Spin·el n. Bleached yarn in making the linen tape called inkle; unwrought inkle.
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 spinel
      n : a hard glassy mineral consisting of an oxide of magnesium
          and aluminum; occurs in various colors that are used as
          gemstones