a collar on a garment, worn rolled over to fit closely round the neck
a garment, esp a sweater, with such a collar
Word Origin for polo
C19: from Balti (dialect of Kashmir): ball, from Tibetan pulu
Marco (ˈmɑːkəʊ). 1254–1324, Venetian merchant, famous for his account of his travels in Asia. After travelling overland to China (1271–75), he spent 17 years serving Kublai Khan before returning to Venice by sea (1292–95)
1872, Anglo-Indian polo, from Balti (Tibetan language of the Indus valley) polo "ball," related to Tibetan pulu "ball." An ancient game in south Asia, first played in England at Aldershot, 1871. Water polo is from 1876 (in early versions players sometimes paddled about on barrels or in canoes). Polo shirt (1892) originally was a kind worn by polo players.