block signal
Americannoun
Other Word Forms
Derived Forms
Etymology
Origin of block signal
First recorded in 1880–85
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
In most nerve agent fatalities, death occurs after the agent binds to enough AChE to block signal transmission from the brain's respiratory center to the diaphragm, paralyzing the muscle that's vital for breathing.
From Science Magazine • Jan. 4, 2018
But when the leading 6:09 was still a mile from the station, an overhead block signal ordered a temporary halt and its motorman obediently applied his brakes.
From Time Magazine Archive
Apparently disregarding a warning block signal, apparently blind to the glare of No. lys's approaching headlight, Motorman Jacob Kiefer took No. 192 down the section of double track and roared on into the gantlet.
From Time Magazine Archive
Disaster whines through the cab window, for the prostrate engineer has not seen the block signal, his throttle yawns unheeded.
From Time Magazine Archive
The scuttlebug automatically reversed and began slowing for the end of its run—tripped by a block signal set in the ribbon cable.
From Where I Wasn't Going by Richmond, Walt
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
