Block signal

Definition of Block signal

1.(Railroads) One of the danger signals or safety signals which guide the movement of trains in a block system. The signal is often so coupled with a switch that act of opening or closing the switch operates the signal also.
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blither
blithering
Blithesome
blitz
blitzkrieg
Blive
Blizzard
Bloat
Bloated
Bloatedness
Bloater
Blob
Blobber
Blobber lip
Blobber-lipped
Blocage
Block
Block book
Block chain
Block printing
-Block signal-
Block system
Block tin
Blockade
blockaded
Blockader
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blocked
Blockhead
Blockheaded
Blockheadism
Blockhouse
Blocking
Blocking course
Blockish
Blocklike
Bloedite
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Bloncket
Blond
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