1. Someone who dives (into water).
2. Someone who works underwater; SYN. frogman, underwater diver.

ETYM See Jump.
1. A loose jacket or blouse worn by workmen.
2. A player releases the basketball at the high point of a jump; SYN. jump shot.
3. A sleeveless apronlike dress; worn over other clothing; SYN. pinafore, pinny.
4. An athlete who competes at jumping.

ETYM Old Eng. knight, cniht, knight, soldier, As. cniht, cneoht, a boy, youth, attendant, military follower; akin to Dutch and German knecht servant; perh. akin to Eng. kin.
(Homonym: night).
Originally a person of noble birth trained to arms and chivalry; today in Great Britain a person honored by the sovereign for personal merit.

Someone who takes the place of another (as when things get dangerous or difficult); SYN. substitute, relief, backup, backup man, fill-in.

An athlete who jumps over a high crossbar with the aid of a long pole; SYN. pole vaulter, pole jumper.

A chessman in the shape of a horse's head; can move two squares horizontally and one vertically (or vice versa); SYN. horse.