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Blech. These are the grossest words.

block system

noun, Railroads.
a series of consecutive blocks.
Compare block (def 22).
a system of blocks and block signals for controlling train movements.
Origin of block system
1860-65 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for block system
Historical Examples
  • A block system is devised and partly made, but is not yet erected.

  • There was only a single track then, and no block system of signals.

    In a Little Town Rupert Hughes
  • They had the whole district organized on the block system, and they went over each block house by house.

    How To Write Special Feature Articles Willard Grosvenor Bleyer
  • We may now pass to the working of the block system of signalling trains from station to station on one line of a double track.

    How it Works Archibald Williams
  • "I don't know what is meant by the block system," added Mrs. Belgrave.

    Asiatic Breezes Oliver Optic

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