JUMPER

I. noun Date: 1611 a person who jumps, 2. any of various devices operating with a jumping motion, any of several sleds, a connection used to close a break or cut out part of a circuit, any of several jumping animals, jump shot , II. noun Etymology: probably from English dialect jump ~ Date: 1850 a loose blouse or jacket worn by workmen, a sleeveless one-piece dress worn usually with a blouse, a child's coverall, sweater 2a