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
First recorded in 1860–65
Words nearby block system
block print,
block printing,
block release,
block sampling,
block signal,
block system,
block tin,
block trade,
block vote,
blockade,
blockade-runner