ガツン LinksSentence search for ガツンSentence search for がつんEdit in JMdict Noun1. klop; klunk; whonk; crash; thumpOnomatopoeic or mimetic wordAdverb taking the 'to' particle2. with a heavy impact; forciblyOnomatopoeic or mimetic word, See also がつんと言うOther formsがつん Discussions Log in to talk about this word.