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]

The Free On-line Dictionary of Computing (19 January 2023):

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.