Definition: A language that a person has been exposed to from birth or within the critical period.
Alternatively it can also refer to the language of one’s ethnic group rather than one’s first language.
Other terms used: first language, native tongue, native language, or mother/father/parent tongue
Spoken by: Everyone. We ALL have a mother language. What’s yours?
International Mother Language Day: Celebrated every year on 21 February
Why not take the Language of the Month Challenge for Mother Languages (and English).
Send your entries to firstname.lastname@example.org
See here what challenges others have done.