Wordnet 3.0
NOUN (2)
1. 
 a single splash; 
- Example: "he heard a splat as it hit the floor"2. 
 a slat of wood in the middle of the back of a straight chair; 
VERB (3)
1. 
 give off the sound of a bullet flattening on impact; 
2. 
 split open and flatten for cooking; 
- Example: "splat fish over an open fire"3. 
 flatten on impact; 
- Example: "The snowballs splatted on the trees"
WordNet (r) 3.0 (2006):
splat
    n 1: a single splash; "he heard a splat as it hit the floor"
    2: a slat of wood in the middle of the back of a straight chair
    v 1: give off the sound of a bullet flattening on impact
    2: split open and flatten for cooking; "splat fish over an open
       fire"
    3: flatten on impact; "The snowballs splatted on the trees"
Moby Thesaurus II by Grady Ward, 1.0:
72 Moby Thesaurus words for "splat":
   bang, beam, billet, board, boarding, bump, burst, bust, clap,
   clapboard, clash, cord, cordwood, crack, crash, crump, deal,
   driftwood, firewood, flap, flop, hardwood, knock, lath, lathing,
   lathwork, log, lumber, panelboard, paneling, panelwork, plank,
   planking, plyboard, plywood, pole, post, puncheon, rap, report,
   shake, sheathing, sheathing board, sheeting, shingle, sideboard,
   siding, slab, slam, slap, slat, smack, softwood, stave, stick,
   stick of wood, stovewood, swap, tap, three-by-four, thwack, timber,
   timbering, timberwork, two-by-four, weatherboard, whack, wham,
   whap, whomp, whop, wood
The Jargon File (version 4.4.7, 29 Dec 2003):
splat
 n.
    1. Name used in many places (DEC, IBM, and others) for the asterisk (*)
    character (ASCII 0101010). This may derive from the ?squashed-bug?
    appearance of the asterisk on many early line printers.
    2. [MIT] Name used by some people for the # character (ASCII 0100011).
    3. The feature key on a Mac (same as alt, sense 2).
    4. obs. Name used by some people for the Stanford/ITS extended ASCII ?
    character. This character is also called blobby and frob, among other
    names; it is sometimes used by mathematicians as a notation for tensor
    product.
    5. obs. Name for the semi-mythical Stanford extended ASCII ? character. See
    also ASCII.
The Free On-line Dictionary of Computing (30 December 2018):
splat
   1. Name used in many places (DEC, IBM, and others) for the
   asterisk ("*") character (ASCII 0101010).  This may derive
   from the "squashed-bug" appearance of the asterisk on many
   early line printers.
   2. Name used by some MIT people for the "#" character (ASCII
   35).
   3. (Rochester Institute of Technology) The feature key on a
   Mac (same as alt).
   4. An obsolete name used by some people for the
   Stanford/ITS extended ASCII circle-x character.  This
   character is also called "blobby" and "frob", among other
   names; it is sometimes used by mathematicians as a notation
   for "tensor product".
   5. An obsolete name for the semi-mythical Stanford extended
   ASCII circle-plus character.
   See also ASCII.
   [Jargon File]
   (1995-01-19)