superblock

1. (architecture, urban studies) A very large block of buildings; in modern urban planning often designed for local needs, with access and speed restrictions.Examples: "All are blots on the urban environment, as blandly homogenous in their own way as the Modernist superblocks they were intended to improve on."; "Conceived as part of a 1950s-era slum-clearance program, the immense superblock required the demolition of an entire neighborhood of dilapidated tenements and brownstones."; "Superblocks are a relatively new urban planning concept that has been pioneered in Barcelona, Spain. The basic idea is to identify a 3 x 3 grid of 9 city blocks and restrict vehicle traffic to the streets on the perimeter. The interior streets then become available for walking, biking, and expanded green space."

2. (computing) A segment of metadata describing the file system on a block device.