1

ironclad

play
adjective iron·clad \ˈī(-ə)rn-ˈklad\

Definition of ironclad

  1. 1 :  sheathed in iron armor —used especially of naval vessels

  2. 2 :  so firm or secure as to be unbreakable: such asa :  binding an ironclad oathb :  having no obvious weakness an ironclad case against the defendant

Examples of ironclad in a sentence

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

  2. He has an ironclad alibi.

Circa 1847

First Known Use of ironclad

circa 1847


2

ironclad

play
noun iron·clad \ˈī(-ə)rn-ˌklad\

Definition of ironclad

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

1862

First Known Use of ironclad

1862


IRONCLAD Defined for English Language Learners

1

ironclad

play
adjective iron·clad \ˈī(-ə)rn-ˈklad\

Definition of ironclad for English Language Learners

  • : not able to be changed

  • : too strong to be doubted or questioned



Seen and Heard

What made you want to look up ironclad? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

capable of being altered or controlled

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

  • peter-bruegel-tower-of-babel-painting
  • What language does pajama come from?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!