1) Dropping sound 2) Game of physical skill 3) Plopping sound 4) With a thud
Found on
https://www.crosswordclues.com/clue/kerplunk
[game] KerPlunk is a children`s game first marketed by the Ideal Toy Company in 1967. The game consists of a transparent plastic tube, plastic rods called straws (normally numbering 26 to 30 in total and of various colours - yellow and red predominantly) and several dozen marbles. The base contains four separate numbered trays and the straw...
Found on
http://en.wikipedia.org/wiki/KerPlunk_(game)
with or as if with a sudden muffled thud: The huge stone hit the water kerplunk.
Found on
https://www.infoplease.com/dictionary/kerplunk
No exact match found.
