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Block (street), an area surrounded but not divided by streets

Block (toy), one of a set of wooden or plastic pieces of various shapes

Block (sailing), a pulley or a number of pulleys enclosed in sheaves

Block (subnational entity)

Block (group theory)

Block (graph theory)

Block (meteorology)

Block (programming), a segment of a program

Block (data storage)

Block (telecommunications), a unit of data transmission

Block (basketball), when a defensive player legally deflects a shot

Census block, the smallest geographical unit in the U.S. Census Bureau

Engine block, the main part of an internal combustion engine

Postage stamp block, an attached group of postage stamps

A block in railway signalling used to control the train movement

A form of access control

A block in blocking (American football), when a player obstructs another player's path

A block in martial arts blocking techniques

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Herbert Lawrence Block

John Rusling Block

Lawrence Block

Maurice Block

Josef Block (1863-1943)

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Block chord

Block cipher

Block matrix

Block size (cryptography)

Bloch (disambiguation)

Blok (disambiguation)

Bloc