crouch, squat, cower
蹲 centers on lowering the body close to the ground: crouching, squatting, or cowering in a protective, compressed posture.
蹲 combines 足 (foot/leg) with 尊, which likely contributes the sound. The foot radical suggests a posture involving the legs, fitting the crouching or squatting meaning.
The left side is 足 (foot/leg), and the right side is 尊. Imagine your legs folding up respectfully as you crouch down low, like a humble bow.
For ソン, picture a son crouching down to hide during a game: son -> ソン, and he squats low behind a bush.