Definitions for kerplunkkərˈplʌŋk
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Random House Webster's College Dictionary
ker•plunkkərˈplʌŋk(adv.)
with or as if with a sudden muffled thud:
The rock hit the water kerplunk.
Origin of kerplunk:
1885–90; see ker -, plunk
Wiktionary
kerplunk(Noun)
A thudding or thunking sound.
kerplunk(Interjection)
A thudding or thunking sound.
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"kerplunk." Definitions.net. STANDS4 LLC, 2013. Web. 24 May 2013. <http://www.definitions.net/definition/kerplunk>.

