Dictionary

mother tongue

noun

: the language that a person learns to speak first

Full Definition of MOTHER TONGUE

1
:  one's native language
2
:  a language from which another language derives
ADVERTISEMENT

First Known Use of MOTHER TONGUE

14th century

Browse

Next Word in the Dictionary: mother witPrevious Word in the Dictionary: mother shipAll Words Near: mother tongue
ADVERTISEMENT
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears