distant signal

noun

variants or distant block signal

: a railroad signal placed at a distance that will allow adequate advance warning of the setting of a home signal at which the train must stop

called also approach signal

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now