Yours, Etc.: Origins and Uses of 8 Sign-Offs
mid-14c., Middle English noun derivative of Old English dragan "to draw," originally meaning a cart without wheels that has to be "dragged" (cf. Old Norse draga "timber dragged behind a horse"); see drag (v.).
the heaviest type of dead-axle wagon used in conjunction with a team of draft animals. Drays were either of the two- or four-wheeled type and were employed most often in and about cities for the transport of heavy loads or objects such as large machines. Features of the dray included smaller wheels than those used on other wagons, a flat, level floor, and, usually, no sides. Some drays, however, did have box bodies or stake sides. Machinery trucks, floats, and transfer wagons were specialized varieties of drays.