from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Having an eyespot on the wing, with two dots within it of a different colour, as in some butterflies.
from the GNU version of the Collaborative International Dictionary of English
- adj. Having an eyelike spot on the wing, with two dots within it of a different color, as in some butterflies.
from The Century Dictionary and Cyclopedia
- Having a double pupil: in entomology, said of an eye-like spot on the wing of a butterfly when it has within it two dots or pupils of a different color.
bi- + pupil + -ate (Wiktionary)