The Collaborative International Dictionary
Corneule
Corneule \Cor"neule\ (k[^o]r"n[=u]l), n. [F., dim. of corn['e]e
the cornea.] (Zo["o]l.)
One of the corneas of a compound eye in the invertebrates.
--Carpenter.
Wiktionary
corneule
n. (context zoology English) One of the corneas of a compound eye in the invertebrates.