noun, plural al·u·lae [al-yuh-lee] /ˈæl yəˌli/.

  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.

noun plural -lae (-liː)

  1. another name for bastard wing
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