
1) Metropolitan distance unit 2) Urban unit
Found on
https://www.crosswordclues.com/clue/city-block

A city block, urban block or simply block is a central element of urban planning and urban design. A city block is the smallest area that is surrounded by streets. City blocks are the space for buildings within the street pattern of a city, and form the basic unit of a city`s urban fabric. City blocks may be subdivided into any number of smaller ....
Found on
http://en.wikipedia.org/wiki/City_block
No exact match found.