後こう転てん跳とびMeanings1nounback handspringGymnastics term for a backward handspring. Compare with バク転, which is the more common loanword for back handspring.See also: バク転体たい操そうの練れん習しゅうで後こう転てん跳とびを何なん度ども繰くり返かえした。I practiced the back handspring over and over in gymnastics training.