阻止
そし · soshi · JLPT N1 · noun
hindrance
🚧 阻 (block) + 止 (stop) = block + stop: obstruction, check, hindrance
止 means stop or halt, as in 中止 (suspend). 阻 means block or hinder. Together they name the act of stopping movement or progress.
止 — pictograph of a foot/toe
止 originally depicted a human foot with toes, shown as a footprint on the ground. From this concrete image of a foot it came to mean 'to stop' or 'halt' — the place where a step ends. It also serves as a component in many characters relating to feet, walking, or stopping, such as 步 and 正.