'Simious' definitions:

Definition of 'Simious'

From: GCIDE

Simious \Sim"i*ous\, a.[L. simia an ape.] (Zool.) Of or pertaining to the Simi[ae]; monkeylike. [1913 Webster]
That strange simious, schoolboy passion of giving pain to others. --Sydney Smith. [1913 Webster]