ironclad
adjective, noun
Forms ironclads
- adjective Covered with iron, steel, or (loosely) any other tough metal; armor-plated. “Unlike the average vehicle, cash delivery vans are ironclad and almost unstoppable.”
- adjective (figuratively) Solid or certain; not able to be disputed or questioned; irrefutable. “The suspect had an ironclad alibi for his whereabouts on the night of the crime.”
- adjective (figuratively) Rigorous; severe; exacting. “an ironclad oath or pledge”
- adjective (figuratively) Stubborn; inflexible.
- noun A ship, vessel, or vehicle with a covering of iron, steel, or (loosely) any other tough metal.
- noun (military) An armor-plated warship, (especially) one preceding the invention of harveyized steel.
- noun A wooden warehouse with an outer skin of corrugated metal.
Synonyms
Etymology
From iron + clad.
Webster’s 1913
- adjective Clad in iron; protected or covered with iron, as a vessel for naval warfare.
- adjective Rigorous; severe; exacting; as, an ironclad oath or pledge.
- noun A naval vessel having the parts above water covered and protected by iron or steel usually in large plates closely joined and made sufficiently thick and strong to resist heavy shot.
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “ironclad”, CC BY-SA 4.0. Details