Outer-top
尸 is the corpse / reclining-body radical, indexing
屠. Originally a side-view drawing of a seated or reclining person, in butchery contexts it stands for the slaughtered body laid out for cutting. The radical pins
屠 firmly in the family of body-related chars (
尾 tail,
屁 fart,
屎 excrement) but here the deathly sense dominates.