Dictionary

1ironclad

adjective iron·clad \-ˈklad\

: not able to be changed

: too strong to be doubted or questioned

Full Definition of IRONCLAD

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>

Examples of IRONCLAD

  1. The company has an ironclad policy against revealing secrets to competitors.
  2. He has an ironclad alibi.

First Known Use of IRONCLAD

circa 1847

2ironclad

noun iron·clad \-ˌklad\

Definition of IRONCLAD

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

First Known Use of IRONCLAD

1862

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