Capuchin (n.)

"Friar of the Order of St. Francis, under the rule of 1528," 1590s, from Middle French capuchin (16c., Modern French capucin), from Italian capuccino, diminutive of capuccio "hood," augmentative of cappa (see cap (n.)). So called from the long, pointed hoods on their cloaks. As a type of South American monkey, 1785, from the shape of the hair on its head, which was thought to resemble a cowl.