The Collaborative International Dictionary
Impennate
Impennate \Im*pen"nate\, a. (Zo["o]l.) Characterized by short wings covered with feathers resembling scales, as the penguins. -- n. One of the Impennes.
Wiktionary
impennate
a. (context zoology English) Characterized by short wings covered with feathers resembling scales, as in the penguins.