coat: [13] Coat seems originally to have signified a sort of short close-fitting cloth tunic with sleeves, worn by men. Over the centuries fashion has lengthened the garment, and its male exclusivity has disappeared (originally, as a woman’s garment a coat was a skirt, a sense preserved in petticoat). The word is of Germanic origin (it has been traced back to Frankish *kotta), but it reached English via Old French cote. [coat etymology, coat origin, 英语词源]