stop, halt
站 centers on coming to a stop or standing still: halting movement or pausing in place.
站 combines 立 (stand) and 占, which likely contributes the sound. The character expresses the idea of standing still or stopping.
立 (stand) beside 占 suggests a person standing firmly in one spot, coming to a halt.
For タン, imagine a tan-colored stop sign: tan -> タン, and the sign makes you halt.