1. Wing-footed, having wings on the feet: Alipeds, like Mercury (the Roman god that served as messenger to the other gods) and Hermes (the Greek equivalent of Mercury) were considered to be swift-footed because they had wings on their feet.
2. In zoology, having the toes connected by a membrane that serves as a wing: "Bats are known as alipeds or cheiropterous (hand-wing) animals."