what another word for safehouse used by slaves?

I'm thinking you are referring to runaway slaves trying to reach the North, generally via the "underground railroad." Places where people could stop safely, were called "stations." Sometimes they were taken from "station" to "station" by "conductors" who were the people, white or black, who were trying to help them.

underground rail road. i also think that the houses that were safe would have a light on outside. hope this helps. good luck with the homework!

underground railroad, you stop at the stations.