idiom

/ˈɪdiəm/

a manner of speaking that is natural to native speakers of a language

中文释义：习语；成语

Learning idioms is essential for mastering a foreign language.

学习习语对于掌握一门外语至关重要。

The idiom 'break the ice' means to start a conversation in a social setting.

习语'break the ice'意为在社交场合开始交谈。