• synonyms

block signal

  1. a fixed railroad signal governing the movements of trains entering and using a given section of track.
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Origin of block signal

First recorded in 1880–85
Related formsblock signaling, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for block signal

Historical Examples

  • The passage of a law requiring the adoption of a block-signal system has been proposed to the Congress.

    State of the Union Addresses of Theodore Roosevelt

    Theodore Roosevelt

  • Why should he battle with the intricacies of a block-signal system when everybody else round the place has a separate bell?

    Europe Revised

    Irvin S. Cobb

  • But this time it falls harmless as one of Chauncey Depew's periodical four-track, block-signal presidential booms.