Pictorial images, usually drawings, that are humorous or that use wit and satire to comment on contemporary events, social habits, political trends, or other topical subjects, often executed in a broad or abbreviated manner. Originally referred to full-page illustrations in a circulating paper or periodical, especially when comical and relating to current events.
Souce: Art & Architecture Thesaurus
http://vocab.getty.edu/page/aat/300123430
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