Source : Webster's Revised Unabridged Dictionary (1913)

Spica \Spi"ca\, n.; pl. {Spic[ae]}. [L., an ear, as of corn.]
   1. (Med.) A kind of bandage passing, by successive turns and
      crosses, from an extremity to the trunk; -- so called from
      its resemblance to a spike of a barley.

   2. (Astron.) A star of the first magnitude situated in the
      constellation Virgo.

Source : WordNet®

Spica
     n : the brightest star in Virgo