noun
Etymology: Middle English iren hat, from iren iron + hat — more at iron , hat
1.
a. : a headpiece of iron or steel used as armor during the middle ages
b. slang : derby 2a
c. : a metal or plastic safety hat
2. : gossan
noun
Etymology: Middle English iren hat, from iren iron + hat — more at iron , hat
1.
a. : a headpiece of iron or steel used as armor during the middle ages
b. slang : derby 2a
c. : a metal or plastic safety hat
2. : gossan
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012