pa|ta|gi|um

pa|ta|gi|um «puh TAY jee uhm», noun, plural -gi|a «-jee uh».

1. a wing membrane, such as of a bat.

2. a fold of skin extending along the side of the body of certain gliding mammals and reptiles, as the flying squirrel.

3. the fold of skin between the upper arm and forearm of birds.

4. a small, flat sclerite above the wing base of many insects.

╂[< New Latin patagium < Latin, gold border of a Roman lady's tunic]