sighter

noun

sight·​er

ˈsītə(r),

-ītə-

plural -s

1

: one who tests the accuracy of sights on small arms

called also aligner, targeteer

2

: sighting shot

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