engine-room telegraph

noun

: a signaling device for transmitting orders from an officer on the bridge of a ship to the engineer in charge relating to the direction and speed of the engine

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