ironclad (n.)

  1. a wooden warship of the 19th century that is plated with iron or steel armor

    ironclad (adj.)

  1. sheathed in iron plates for protection

  2. inflexibly entrenched and unchangeable; brassbound traditions; brassbound party loyalists; an ironclad rule

    [ Syn: brassbound ]

The dictionary is based on the WordNet Electronic Lexical Database.
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