satyr

Short definition from Wiktionary

Noun

1. 1
   A sylvan deity or demigod, male companion of Pan or Dionysus, represented as part man and part goat, and characterized by riotous merriment and lasciviousness, sometimes pictured with a perpetual erection.
2. 2
   Synonym of faun.
3. 3
   A lecherous man.
4. 4
   Any of various butterflies of the nymphalid subfamily Satyrinae, having brown wings marked with eyelike spots; a meadow brown.
5. 5
   The orangutan.