An idiom is a phrase or expression that has a figurative meaning that is different from the literal meaning of the words. In other words, an idiom is a group of words that, when used together, have a different meaning than the individual words themselves. Idioms are often used in everyday conversation and are a common part of many languages. They can be used to express a wide range of emotions and ideas, and they can add color and flavor to the way we speak. Some common English idioms include "break a leg," "every cloud has a silver lining," and "beating around the bush."