lock bolt

noun

1

: bolt sense 2b

2

a

: a bolt or pin employing a special locking collar instead of a nut

b

: a bolt for securing an adjustable part of a machine in a desired position

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