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1.
A pleonasm is a redundant description. It is describing a word using adjectives that apply to it's inherent characteristics.
Person 1: Tim is a stupid idiot.

Person 2: As opposed to a smart idiot? You just used a pleonasm.
by PatrickRF February 05, 2008
 
2.
Unusual ghostlike creature who frequents outhouses and continues to repeat the same word.
Jake heard the pleonasm through the half moon in the door, the night the comet struck.
by joyful noise August 28, 2003