iron hat

noun

1

a

: a headpiece of iron or steel used as armor during the middle ages

b

slang : derby sense 2a

c

: a metal or plastic safety hat

2

: gossan

Word History

Etymology

Middle English iren hat, from iren iron + hat

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