Blonde Girl With Sunglasses Reveals In A Black Coat In The Construction Area

An early use of coat in English is coat of mail (chainmail), a tunic-like garment of metal rings, usually knee- or mid-calf length.
The medieval and renaissance coat (generally spelled cote by costume historians) is a midlength, sleeved men's outer garment, fitted to the waist and buttoned up the front, with a full skirt: in its essentials, not unlike the modern coat.
By the eighteenth century, overcoats had begun to supplant capes and cloaks as outer wear, and by the mid-twentieth century the terms jacket and coat became confused for recent styles; the difference in use is still maintained for older garments.