sploot · interjection1
Imitative of the sound.
sploot · noun, verb2
Origin uncertain, possibly a variant of splat, splay, or split. The ending -oot could either be due to one of the preceding words being blended with scoot, or simply a modification to make the term sound cute (compare bork from bark, floof from fluff, hooman from human, etc.).
First known use, by meaning
- from early 21st c. An animal's posture of lying flat on its stomach with its hind legs extended.
- from early 21st c. Of an animal: to lie flat on its stomach with its hind legs extended.
Etymology from Wiktionary, CC BY-SA 4.0.