American Heritage® Dictionary of the English Language, Fourth Edition
- n. 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, spurious wing.
Century Dictionary and Cyclopedia
- In ornithology, the winglet, bastard wing, or ala spuria of a bird; the packet of small feathers which grows upon the so-called thumb of a bird's wing. The feathers are rather stiff, resembling primaries to some extent, but always smaller, and contribute to the smoothness and evenness of the border of the wing.
- In entomology: The small membranous appendage or scale situated at the base of each wing of many dipterous insects, above the halteres or poisers.
- A similar appendage beneath each elytron of some water-beetles. Also called alulet and cucilleron.
GNU Webster's 1913
- n. (Zoöl.) A false or bastard wing. See under bastard.
- n. scalelike structure between the base of the wing and the halter of a two-winged fly
- n. tuft of small stiff feathers on the first digit of a bird's wing
- From Latin; diminutive of ala ("wing"). (Wiktionary)
- New Latin, diminutive of Latin āla, wing. (American Heritage® Dictionary of the English Language, Fourth Edition)
“Viki remembers the mysterious figure in the dark calling her 'alula' and, as she does some research, the first of a series of startling events that will change her life forever unfold.”
“But the alula opened properly and I decided I must have been overcontrolling, easy to do with Storer-Gulls; they're extremely maneuverable.”
“Two years ago a boy who had just graduated from orange wings tried it ... knocked off his left alula and primaries on a strut -- went fluttering and spinning down two thousand feet and crashed.”
“They're lovely -- titanalloy struts as light and strong as bird bones, tension-compensated wrist-pinion and shoulder joints, natural action in the alula slots, and automatic flap action in stalling.”
“While it was cycling I opened my left wing and thumbed the alula control -- I had noticed a tendency to sideslip the last time I was airborne.”
“Aileron: the scale covering the base of primaries in some insects; see tegulae in Diptera = alula and squama, q.v. Air-sacs or vesicles: pouch-like expansions of tracheal tubes in heavy insects, capable of inflation and supposed to lessen specific gravity.”
“Axillary excision: = a. incision, q.v. Axillary incision: Diptera; an incision on inner margin of wing, near base, which separates the alula from the main part.”
“Lobulus: the partly separated portion of the wings of some flies and of secondaries in some Hymenoptera: also used as = alula; q.v. Lobus: of maxilla = galea; q.v. Locomotion: organs of, are legs and wings.”
“Axillary lobe: the sclerite covering the base of the wing in Diptera; see also alula and posterior lobe.”
“Alulet: Diptera: the lobe at basal posterior part of wing; = alar appendage; posterior lobe: and has been used as = alula.”
These user-created lists contain the word ‘alula’.
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Looking for tweets for alula.