mother tongue

[ muhth-er -tuhng for 1; muhth-er -tuhng for 2 ]
/ ˈmʌð ər ˈtʌŋ for 1; ˈmʌð ər ˌtʌŋ for 2 /

noun

the language first learned by a person; native language.

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Origin of mother tongue

1350–1400; Middle English moder tonge
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for mother tongue

British Dictionary definitions for mother tongue

mother tongue

noun

the language first learned by a child
a language from which another has evolved
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012