satyr

noun

1. Gr. Myth. any of a class of minor woodland deities, attendant on Dionysus, orig. represented as having the ears and tail of a horse, later as having pointed ears, short horns, the head and trunk of a man, and the hind legs of a goat, and as being fond of riotous merriment and lechery
2. a lustful or lecherous man
3. a man having satyriasis
4. any of a worldwide family (Satyridae) of butterflies with gray or brown wings, often with eyelike spots
   also called satyrid