also: どかーん
adverb, adverb taking the 'to' particle
Mimetic word for a sudden loud explosive or crashing sound, often used with と or as an adverb.
ドアがドカンと閉まった。
The door slammed shut with a bang.
花火がドカンと打ち上がった。
The firework shot up with a bang.
Onomatopoeic word mimicking a loud explosive sound.