vaulting horse

noun, Gymnastics.
1.
a padded, somewhat cylindrical floor-supported apparatus, braced horizontally at an adjustable height, used for hand support and pushing off in vaulting.
Also called long horse.
Compare pommel horse.
Origin
1870-75
British Dictionary definitions for vaulting horse

vaulting horse

noun
1.
(gymnastics) a padded apparatus on legs, used for vaulting exercises Also called buck