The Collaborative International Dictionary of English v.0.48:

Splash \Splash\, v. t. [imp. & p. p. Splashed; p. pr. & vb. n.
   Splashing.] [Akin to plash.]
   1. To strike and dash about, as water, mud, etc.; to plash.
      [1913 Webster]

   2. To spatter water, mud, etc., upon; to wet.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Splash \Splash\, v. i.
   To strike and dash about water, mud, etc.; to dash in such a
   way as to spatter.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Splash \Splash\, n.
   1. Water, or water and dirt, thrown upon anything, or thrown
      from a puddle or the like; also, a spot or daub, as of
      matter which wets or disfigures.
      [1913 Webster]

   2. A noise made by striking upon or in a liquid.
      [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

202 Moby Thesaurus words for "splash":
   ado, asperge, babble, bedabble, bedew, bespatter, bespeckle,
   bespot, besprinkle, birthmark, blaze, blazon, blemish, bloodstain,
   blot, blotch, blur, brand, bravura, brilliancy, brouhaha, bubble,
   burble, caste mark, check, checkmark, cicatrix, commotion, cut,
   cut a dash, cut a figure, cut a swath, dab, dabble, damp, dampen,
   dapple, dappledness, dappleness, daring, dash, daub, dazzle,
   demonstration, dew, discoloration, display, dot, dottedness,
   douche, douse, dramatics, dramatize, drench, drown, earmark, eclat,
   engraving, etalage, excitement, exhibition, exhibitionism, eyesore,
   false front, fanfaronade, flaunt, flaunting, fleck, flick,
   flourish, flyspeck, foam, foofaraw, freckle, freckliness, froth,
   gash, glare, glitter, graving, guggle, gurgle, hack, histrionics,
   hose, hose down, humect, humectate, humidify, impression, irrigate,
   jot, lap, lapping, lentigo, macula, maculate, maculation, macule,
   make a figure, make a show, make a splash, manifestation, mark,
   marking, moisten, mole, mottle, mottledness, nevus, nick, notch,
   paddle, pageant, pageantry, parade, patch, plash, plaster, play up,
   point, pointillage, pointillism, polka dot, prick, puncture, purl,
   ripple, ripple of applause, ripple of laughter, scar,
   scarification, score, scotch, scratch, scratching, sensation, sham,
   shine, show, shower, showing-off, slobber, slop, slosh, smear,
   smirch, smouch, smudge, smut, smutch, soak, sop, sparge, spatter,
   speck, speckle, speckliness, spectacle, spindrift, splatter,
   splosh, splotch, splurge, sponge, spot, spottedness, spottiness,
   spray, spread, sprinkle, spume, spurtle, squirt, staginess, stain,
   stigma, stipple, stippledness, stippling, strawberry mark, swash,
   swish, syringe, taint, tarnish, tattoo, tattoo mark, theatrics,
   throw, tick, tittle, to-do, trill, uproar, vaunt, wash, washing,
   water, watermark, wet, wet down



The Free On-line Dictionary of Computing (30 December 2018):

SPLash!

   1. Software Research Northwest, 1987.  Compiler for SPL[3].

   2. Systems Programming LAnguage for Software Hackers.
   Mentioned in TeX for the Impatient, Paul W. Abrahams, A-W
   1990.