Top Definition
A monster who is your mentor. Intuited from Paolo Bacigalupi's books "Ship Breaker" and "The Drowned Cities," which feature a mutant named Tool who is monstrous yet also acts as a mentor for some younger characters.
In "Ship Breaker," the mutant Tool gives advice to Nailer, acting as his monster mentor, or monstor.
by Regis Zeppelin November 29, 2015
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