Definitions of splat:

• noun:   a slat of wood in the middle of the back of a straight chair
• noun:   a single splash

  Example: "He heard a splat as it hit the floor"

• verb:   give off the sound of a bullet flattening on impact
• verb:   flatten on impact

  Example: "The snowballs splatted on the trees"

• verb:   split open and flatten for cooking

  Example: "Splat fish over an open fire"