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词汇 key block
释义

Definition of key block in English:

key block

noun ˈkiː blɒk
  • 1A block placed at the summit of an arch or other structure, locking the whole together; a keystone.

  • 2Printing and Printmaking. = "keystone".

  • 3In quarrying: the first block or blocks to be removed from a new layer of stone.

Origin

Early 19th century; earliest use found in Literary Gazette. From key + block.

Definition of key block in US English:

key block

nounˈkiː blɒk
  • 1A block placed at the summit of an arch or other structure, locking the whole together; a keystone.

  • 2Printing and Printmaking. = "keystone".

  • 3In quarrying: the first block or blocks to be removed from a new layer of stone.

Origin

Early 19th century; earliest use found in Literary Gazette. From key + block.

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