Car·i·ca·ture n.
1. An exaggeration, or distortion by exaggeration, of parts or characteristics, as in a picture.
2. A picture or other figure or description in which the peculiarities of a person or thing are so exaggerated as to appear ridiculous; a burlesque; a parody. [Formerly written caricatura.]
The truest likeness of the prince of French literature will be the one that has most of the look of a caricature. --I. Taylor.
A grotesque caricature of virtue. --Macaulay.