Top Definition
Originating from the English prefix "mono-", meaning lone, and the Albanian word "terr", meaning dark.

A monoterrium is a dark, lonely place. It may also be used in a more common form, as in your house after your wife left. Monoterrium is a word usually expressed in art, music, or poetry.
The corner in his room is that little emo kid's monoterrium.
by Smoof June 12, 2008

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