bastard wing
present participle of rugburn
A tuft of feathers borne by the bony thumb-like structure in a bird's wing; alula.
(archaic) An Albanian.
plural of conscientious objector
急旋回の最中、ツバメは母指のような翼の部分にある小さな羽毛の房（アルウラ）を弾くように動かして動きを安定させた。
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