girasole

Girasole \Gir"a*sole\ Girasol \Gir"a*sol\, n. [It. girasole, or
   F. girasol, fr. L. gyrare to turn around + sol sun.]
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   1. (Bot.) See {Heliotrope}. [Obs.]
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   2. (Min.) A variety of opal which is usually milk white,
      bluish white, or sky blue; but in a bright light it
      reflects a reddish color.
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Heliotrope \He"li*o*trope\, n. [F. h['e]liotrope, L.
   heliotropium, Gr. ?; ? the sun + ? to turn, ? turn. See
   {Heliacal}, {Trope}.]
   1. (Anc. Astron.) An instrument or machine for showing when
      the sun arrived at the tropics and equinoctial line.
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   2. (Bot.) A plant of the genus {Heliotropium}; -- called also
      {turnsole} and {girasole}. {Heliotropium Peruvianum} is
      the commonly cultivated species with fragrant flowers.
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   3. (Geodesy & Signal Service) An instrument for making
      signals to an observer at a distance, by means of the
      sun's rays thrown from a mirror.
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   4. (Min.) See {Bloodstone}
      (a) .
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   {Heliotrope purple}, a grayish purple color.
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