block signal

noun

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

Other Words From

• block signaling noun

Word History and Origins

Origin of block signal¹

First recorded in 1880–85

Example Sentences

The scuttlebug automatically reversed and began slowing for the end of its run—tripped by a block signal set in the ribbon cable.

From Project Gutenberg

Trains moving on caution card must expect to find main track occupied at all stations regardless of the position of block signal.

From Project Gutenberg

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

From Project Gutenberg

The sergeant's hand snapped up to salute like a block signal.

From Project Gutenberg

The block signal even with the train staff or the train tablet is far from perfect.

From Project Gutenberg