Leaper

noun

1. One who or that which runs or leaps: as, a horse that is a good leaper.
2. An anglers' name for the salmon, from its leaping over obstructions in streams.
3. A tool used by junkmen for untwisting old rope; a loper.
4. Nautical, a sea that breaks on board a vessel; a wave that leaps over the rail.
5. One who, or that which, leaps.