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Of or from/related to the forest. Some older books and poems describe characters or objects as being silvan, like Ivanhoe and Ode On a Grecian Urn.
The small girl reminded me of some silvan being out of a legend.
by Anne Onymous Editor January 11, 2010
damn that guy's stupid, like a silvan.
by F November 17, 2003
a person with no life and likes to have sex with sheep hourly...
You are a SILVAN!
by Mee November 17, 2003