'Rubytail' definitions:

Definition of 'Rubytail'

From: GCIDE

Rubytail \Ru"by*tail`\, n. (Zool.) A European gold wasp (Chrysis ignita) which has the under side of the abdomen bright red, and the other parts deep bluish green with a metallic luster. The larva is parasitic in the nests of other wasps and of bees. [1913 Webster]