jumper:
a person who jumps; "as the jumper neared the ground he lost control"; "the jumper's parachute opened"
an athlete who competes at jumping; "he is one hell of a jumper"
a coverall worn by children
a small connector used to make temporary electrical connections
a loose jacket or blouse worn by workmen
a sleeveless dress resembling an apron; worn over other clothing
(basketball) a player releases the basketball at the high point of a jump
http://wordnet.princeton.edu/perl/webwn
singlet:
A tight, sleeveless, one-piece outfit worn by wrestlers during their matches.
http://www.newingtonblackhawks.com/glossary.htm
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This was found on Google by typing in define:jumper and define:singlet.
