びよーんalso: ぽよーんMeanings1adverb taking the 'to' particlesproing; boingonomatopoeic or mimetic wordOnomatopoeia for a springy, elastic bouncing or stretching sound, like a cartoon spring or rubber band. Often used with と.See also: ぴょーんびよーんとゴムが伸のびた。The rubber stretched with a sproing.