The Collaborative International Dictionary of English v.0.48:
Spica \Spi"ca\, n.; pl. Spicae. [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
[1913 Webster] Spicate