Kerplunk has several meanings:
- an onomatopoeia to represent the sound of something heavy falling down.
- an album, by punk rock band Green Day; and
- a game involving the suspension of numerous marbles over a web of thin plastic rods inserted perpendicularly through a clear plastic cylinder. The players take turns removing a single rod from the cylinder while trying to minimize the number of marbles that fall to the ground. The player who accumulates the largest number of fallen marbles loses. The name of the game derives from the onomatopoeic sound of the marbles tumbling to the base of the cylinder when a given rod is removed.
