steep hill, precipitous
陗 centers on a steep, precipitous hill or slope, emphasizing sharp verticality and inaccessibility.
陗 combines the hill radical ⻖ with 肖, which likely contributes the sound. The character is associated with steep, precipitous terrain.
The left side ⻖ is a hill, and the right side 肖 looks like a small, sharp shape. Picture a hill so steep it resembles a sharp, precipitous cliff.
For ショウ, imagine a show being performed on a dangerously steep hill: show -> ショウ, and the performers must be careful on the precipitous slope.