DICT.TW Dictionary Taiwan

 iron·clad /-ˈklæd/
 (a.)裝甲的,鐵定的

 I·ron·clad a.
 1. Clad in iron; protected or covered with iron, as a vessel for naval warfare.
 2. Rigorous; unbreakable; severe; exacting; inflexible; as, an ironclad oath or pledge. [Colloq.]

 I·ron·clad, n. 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.  Modern naval vessels are made of steel throughout, and this term is only used in historical contexts.
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 ironclad
      adj 1: inflexibly entrenched and unchangeable; "brassbound
             traditions"; "brassbound party loyalists"; "an
             ironclad rule" [syn: brassbound]
      2: without flaws or loopholes; "an ironclad contract"; "a
         watertight alibi"; "a bulletproof argument" [syn: unassailable,
          unshakable, watertight, bulletproof]