Top Definition
Onamonatopia, the sound something heavy (i.e. a dead body) makes when one throws it into a large body of water (i.e. that lake behind your house, don't think I don't know what you're doing...)
*rock is thrown into water* *ploink*
Damn, he's made the largest ploink yet.
by KS March 10, 2004
To make a small electronic donation to charity. Also another way of describing a microdonation to a charity.
I've just ploinked 2p into the Lymphoma Association's electronic charity collection tin at
by dorothy donor January 22, 2011
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