plash 
(plăsh)
(plăsh)n.
1. A light splash.
2. The sound of a light splash.
v. plashed, plash·ing, plash·es
v.tr.
To spatter (liquid) about; splash.
v.intr.
To cause a light splash.
[Possibly from Middle English plashe, pool of water, from Old English plæsc.]