Right-side knife radical, the standing form of
刀. The indexing radical, supplying the meaning:
剖 is to cut open, dissect, lay something bare with a blade. Family of cutting verbs:
切 slice,
割 cut,
刺 stab,
划 cut a line. The two-stroke vertical
刂 always sits on the right; left-side
刀 keeps its full shape.