Ironclad



GRE 蓝宝

解释

GRE 红宝书

• adj. 坚固的; 装铁甲的
• ［英］ adj. 坚固的 ( difficult to change or break) ; 装铁甲的 ( covered or protected with iron)
• ［记］ iron ( 铁) +clad ( 给...加包层) -> 包层铁 -> 坚固的

Webster Collegiate

I. adjective

• Date: circa 1847
• 1. sheathed in iron armor — used especially of naval vessels
• 2. so firm or secure as to be unbreakable: as
  • a. binding <an ironclad oath>
  • b. having no obvious weakness <an ironclad case against the defendant>

II. noun

• Date: 1862
• an armored naval vessel especially of the mid to late 19th century

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