Jumper

1. (n.) One who, or that which, jumps.
2. (n.) A long drilling tool used by masons and quarrymen.
3. (n.) A rude kind of sleigh; -- usually, a simple box on runners which are in one piece with the poles that form the thills.
4. (n.) The larva of the cheese fly. See Cheese fly, under Cheese.
5. (n.) A name applied in the 18th century to certain Calvinistic Methodists in Wales whose worship was characterized by violent convulsions.
6. (n.) spring to impel the star wheel, also a pawl to lock fast a wheel, in a repeating timepiece.
7. (n.) A loose upper garment
8. (n.) A sort of blouse worn by workmen over their ordinary dress to protect it.
9. (n.) A fur garment worn in Arctic journeys.
10. (n.) A thing that jumps; esp., any of various tools or other contrivances operating with a jumping motion;
11. (n.) an instrument for boring holes in rocks by percussion without hammering, consisting of a bar of iron with a chisel-edged steel tip at one or both ends, operated by striking it against the rock, turning it slightly with each blow.