Annoying kid at the pool

Wiktionary Word definitions in Wiktionary
n. Someone who splashes.

WordNet Word definitions in WordNet
n. a protective covering over or beside a wheel to protect the upper part of a vehicle from splashes of mud protective covering consisting of a panel to protect people from the splashing water or mud etc. [syn: splashboard , dashboard ]

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Splasher \Splash"er\, n. One who, or that which, splashes. One of the guarde over the wheels, as of a carriage, locomotive, etc. --Weale. A guard to keep off splashes from anything.