gascheck

noun

1

: a device in a gun or chemical projector that prevents escape of gas

2

: a small copper cup fitted to the base of a lead bullet for small arms to prevent the melting of the base at the temperatures and pressures created by high-velocity smokeless powder

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