1. kerplunk - Noun
2. kerplunk - Verb
3. kerplunk - Interjection
kerplunk (plural kerplunks)
A thudding or thunking sound.
kerplunk
A thudding or thunking sound.
kerplunk (third-person singular simple present kerplunks, present participle kerplunking, simple past and past participle kerplunked)
To make a thudding or thunking sound.
This CD/DVD featured songs from American Idiot as well as songs from all its previous albums, except Kerplunk and 1,039/Smoothed Out Slappy Hours. Source: Internet