T bolt

noun

variants or less commonly tee bolt

1

: a bolt having a crosspiece for a head

2

: a bolt with a head of square or rectangular shape intended to fit a T slot

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