stop
逗 centers on the idea of stopping or staying in one place, often temporarily. The single given meaning 'stop' captures this core sense of halting movement or pausing.
逗 combines the movement radical 辶 with 豆, which likely contributes the sound. The character originally expressed the idea of stopping or staying during movement.
The movement radical 辶 suggests walking, and 豆 looks like a small bean or container. Imagine a traveler stopping to rest and eat a bean, pausing their journey.
For トウ, picture a toe stopping right at the edge of a line: toe -> トウ, and the movement halts.