noun, plural Si·le·ni /-naɪ/Show Spelled[-nahy]Show IPA, for 2. Classical Mythology.
1.
a forest spirit, sometimes referred to as the oldest of the satyrs and the foster father, teacher, and companion of Dionysus: often represented as a bearded old man.
2.
( lowercase ) any of a group of forest spirits similar to satyrs: often represented as a drunken old man with the legs and ears of a horse.