It is a street that will be cut off by the wall of the city, so whoever comes in it can not go on the other side: you have to retrace their steps, hence it's " you enter, and salt, if you can ". As name exists in many localities that had walls, although today the Street exit, once demolished the wall.
* Only one "like" per meaning and day, the more "likes" the meaning will appear higher in the list
