adverb, adverb taking the 'to' particle
Onomatopoeic word for a repeated heavy thumping or banging sound, often used with と.
See also: ゴツン
誰かがドアをゴツンゴツンと叩いている。
Someone is banging on the door.
隣の部屋からゴツンゴツンという音が聞こえる。
I can hear a thumping sound from the next room.