patagium
/pəˈteɪdʒɪəm/noun
(pl. patagia /-ˈdʒɪə/)
1- Zoology a membrane or fold of skin between the forelimbs and hindlimbs on each side of a bat or gliding mammal【动】（蝙蝠或滑翔哺乳动物的）飞膜, 翼膜。
1.1
- Entomology a lobe that covers the wing joint in many moths【昆】颈片, 领片, 翅基片。
词源
early 19th cent.: from Latin, denoting gold edging on the edge of a Roman lady's tunic, from Greek patageion.