1The weight of a locomotive, aircraft, vehicle, or machine when fully equipped, fuelled, and ready for service, but before it is loaded.
2North American A weight and quality of fabric, clothes (especially hosiery), etc., suitable for heavy wear. Now somewhat rare.
adjectivehistorical North American
Especially of hosiery and footwear: of a weight and quality suitable for heavy wear.
Mid 19th century (in an earlier sense). From service + weight.