- Mother tongue is defined as the first language that a person learns and the language used in that person's home country.
An example of mother tongue is English for someone born in America.
mother tongue definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
- one's native language
- a language in its relation to another derived from it
mother tongue definition by American Heritage Dictionary
- One's native language.
- A parent language.