ironclad

Definition from Wiktionary, a free dictionary

Contents 1 English 1.1 Etymology 1.2 Pronunciation 1.3 Adjective 1.4 Noun

[edit] English

[edit] Etymology

iron + clad

[edit] Pronunciation

•  Audio (US)^{help, file}

[edit] Adjective

ironclad (not comparable)

1. Covered with iron.
2. (figuratively) Solid or certain; not able to be disputed or questioned; irrefutable.

   The guy had an ironclad alibi for his whereabouts on the night of the crime.

[edit] Noun

Wikipedia

ironclad (plural ironclads)

1. (nautical) A ship or vessel covered in iron.
2. (military) An ironclad warship.