progne

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

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