A section of a city bounded by (usually four) intersecting streets or other thoroughfares; (also) the length of one side of such an area, especially as a measure of distance.
Origin
Mid 19th century.
Definition of city block in US English:
city block
noun
US
A section of a city bounded by (usually four) intersecting streets or other thoroughfares; (also) the length of one side of such an area, especially as a measure of distance.