Dictionary & Thesaurus

alula

1.	(noun) scale-like structure between the base of the wing and the halter of a two-winged fly
	Synonyms: calypter
	Related Words: squama

2.	(noun) tuft of small stiff feathers on the first digit of a bird's wing
	Synonyms: bastard wing, spurious wing
	Related Words: feather, plumage, plume