👉 An idiom is a short, simple expression that conveys a clear idea or meaning in a specific way. Idioms are typically used to express figurative language and to convey complex ideas succinctly. They often have multiple meanings and can be applied to different contexts. For example, the phrase "to lose one's head" has two idiomatic uses: as an expression of anger (when someone is upset or angry), and as a metaphor for losing control or being controlled by others.