dialect · noun C or U /ˈdɑɪ.ə.lekt/Full view
C2 a form of a language that people speak in a particular part of a country
Dictionary example:

They're speaking a local dialect.

Learner example:

Mrs Haefele, the owner and cook of this inn, serves the meals personally and if you are lucky, you [may] understand a bit of her Swabian dialect. (Certificate of Proficiency in English; C2; German)

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