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English definition of “first language”

first language

noun   /ˈfɜrst ˈlæŋ.ɡwɪdʒ/
the language that someone learns to speak first: Madeleine’s first language is French , but she also speaks German fluently .
(Definition of first language noun from the Webster's Essential Mini Dictionary © Cambridge University Press)

Definitions of “first language” in other dictionaries

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