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Cynics are believed to have derived their name from that of the Cynosarges, a famous public gymnasium (an outdoor place of learning) on the outskirts of Athens, where Antisthenes is known to have once taught. According to legend, the Cynosarges itself is named after the Greek for ‘white dog’, kynos argos, as it was supposedly founded on the site of an ancient shrine built where a magnificent white dog dropped a chunk of meat it had stolen from a sacrificial offering. 6.
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Paul Anthony Jones (Haggard Hawks and Paltry Poltroons: The Origins of English in Ten Words)