Pronunciation: (al'yu-lu), [key]
—pl. -laePronunciation: (-lē"). [key]
1. Also called bastard wing, spurious wing. the group of three to six small, rather stiff feathers growing on the first digit, pollex, or thumb of a bird's wing.
2. a membranous lobe at the base of each wing of a dipterous insect.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.