from The Century Dictionary and Cyclopedia
- n. The so-called patagium of a bird's wing: the more precise name of the fold of skin in front of the upper arm and of the forearm which fills up the reëntrance between these parts, and so forms the smooth fore-border of the wing from the shoulder to the carpal angle.
- n. In zoology, that part of the wing membrane of a bat which lies in advance of the arm; the præbrachium.
Sorry, no etymologies found.
The membrane that extends along the leading edge of the arm (usually from the shoulder to the wrist) is the propatagium while that connecting the trailing edge of the upper arm to the body is the plagiopatagium.