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Webster 1913 Edition

Noun.

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.

splasher ‎(plural splashers)

Someone who splashes.
- (Can we date this quote?), Nell Speed, Molly Brown's Orchard Home:
  They gave her room, all right, especially if her medium happened to be water color, as Judy was a grand splasher and spared neither water nor paint.
(dated) A guard to keep off splashes from anything; especially, one of the guards over the wheels of a carriage, locomotive, etc.
(Can we find and add a quotation of Weale to this entry?)