Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “iron”

iron

noun  /ˈɑɪ·ərn/ us  

iron noun (METAL)

[U] a common, silver-colored, metal element that is magnetic and strong, is used in making steel, and is found in small amounts in blood and in all living things: Iron rusts easily. Liver is a rich source of dietary iron.

iron noun (DEVICE)

[C] a device with a handle and a flat metal base that can be heated and pressed against cloth to make the cloth smooth

iron

verb [T]  /ˈɑɪ·ərn/ us  

iron verb [T] (USE DEVICE)

to make cloth smooth using an iron: I have to iron this skirt. [M] Let me iron out the wrinkles in this tablecloth.
Phrasal verbs

iron

adjective [not gradable]  /ˈɑɪ·ərn/ us  

iron adjective [not gradable] (MADE OF METAL)

made of or containing iron: iron ore an iron railing along the steps fig. Her success depended on physical strength and an iron will (= strong determination).
(Definition of iron from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of iron?
Browse related topics

You are looking at an entry to do with Opportunity, but you might be interested in these topics from the Chance and possibility topic area:

Add Cambridge dictionaries to your browser to your website

Definitions of “iron” in other dictionaries

Word of the Day

mutant

an organism that is different from others of its type because of a permanent change in its genes

Word of the Day

What’s that lovely smell?

by Kate Woodford​,
October 29, 2014
As adult humans, we can distinguish about 10,000 different smells. It’s no wonder, then, that we have so many words and expressions to describe them. This week we’re taking a look at those smell words – words that describe good smells and words that describe bad smells. Most smell words are either

Read More 

high-frequency trading noun

October 27, 2014
a type of stock market trading that uses very complex technology to trade extremely quickly, often making tiny profits which nevertheless add up to substantial sums Lewis’s book, Flash Boys, is driving a huge amount of attention toward the topic of high frequency trading, and it has rekindled some of

Read More