What Does "Tune Up" Mean?
"Tune up" is an English idiom. It means "to make adjustments or improvements to something to enhance its performance or functioning."Examples in Sentences
Here are three examples of the idiom "tune up" used in a sentence:- The mechanic needed to tune up the car's engine to ensure it ran smoothly.
- Before the concert, the guitarist took some time to tune up his instrument and check for any issues.
- Regular maintenance helps tune up the efficiency of heating and cooling systems in buildings.

What Is an Idiom?
An idiom is a commonly used expression whose meaning does not relate to the literal meaning of its words. In other words, if you were to translate "Tune Up" word for word, there is no guarantee the translation would help you to understand the meaning.An idiom often includes a cultural or historical context that makes it difficult for non-native English speakers to understand. A phrase is classified as an idiom when a direct translation of the words does not reveal the meaning. Most idioms rely on shared knowledge or experiences known only to a specific community.
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