Prog"ne (?), n. [L., a swallow, traditionally said to be fr. Progne (The sister of Philomela), who was changed into a swallow, Gr. .] Zool. (a)
A genus of swallows including the purple martin. See Martin.
An American butterfly (Polygonia, ∨ Vanessa, Progne). It is orange and black above, grayish beneath, with an L-shaped silver mark on the hind wings. Called also gray comma.
© Webster 1913.