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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.

[New Latin, diminutive of Latin āla, wing.]

al′u·lar (-lər) adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.alular - pertaining to alulaealular - pertaining to alulae      
zoological science, zoology - the branch of biology that studies animals
References in periodicals archive ?
There were no incoming feathers on the mottled throat, forehead feathers were new, whereas marginal and secondary coverts and alular quills were old.
One week after presentation, the mass was surgically excised and the involved alular bone was removed.