Noun, Suru verb, Intransitive verb
somersault
彼はトンボ返りをした。He turned a somersault. returning from a destination right after arriving there; non-stop round trip; round trip without an overnight stop
abrupt change of direction
Also written トンボ帰り【とんぼがえり】、とんぼ帰り【とんぼがえり】、トンボ返り【とんぼがえり】、蜻蛉返り【とんぼがえり】