also: がしゃーん · がっしゃーん · がっしゃん
interjection, adverb taking the 'to' particle, adverb
Onomatopoeic word for a loud, sudden impact sound, like something heavy breaking or colliding. Often used with と as an adverb or as an interjection.
ガシャンと大きな音がして、窓ガラスが割れた。
With a loud crash, the window glass shattered.
車が壁にガシャン
The car smashed into the wall with a bang.