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ironclad
(-klad′)
adjective
- covered or protected with iron
- difficult to change or break: an ironclad lease
noun
a warship of the 19th cent. armored with thick iron plates
See ironclad in American Heritage Dictionary 4
adjective
- Sheathed with iron plates for protection.
- Rigid; fixed: an ironclad rule.
A 19th-century warship having sides armored with metal plates.
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