alula

Definition of Alula in English :

1. alula, calypter

scalelike structure between the base of the wing and the halter of a two-winged fly

tuft of small stiff feathers on the first digit of a bird's wing

WordNet Lexical Database for English. Princeton University. 2010.

Alula

noun plural -lae (-liː)

another name for bastard wing

nounWord forms: plural ˈaluˌlae (ˈæljuˌli ; alˈyo̅olēˌ)

the terminal part of a bird's wing corresponding to the thumb, consisting of two or more quills; bastard wing

n. pl. al·u·lae (-lē′)

A small joint in the middle of a bird's wing, homologous with the thumb and bearing three or four quill-like feathers. Also called bastard wing.