- one's native language; the language learned by children and passed from one generation to the next
- Mother Tongue is the yearly periodical of the Association for the Study of Language In Prehistory and was established in 1995. ...
- The Mother Tongue (ISBN 0-380-71543-0) is a book by Bill Bryson which compiles the history and origins of the English language and the language's various quirks. It is subtitled English And How It Got That Way. ...
- the dominant language a person hears and learns in childhood
- Refers to the first language learned at home in childhood and still understood by the individual at the time of the census.
- dialect, household words, King's English, language, lingo, native tongue, phraseology, Queen's English, speech, tongue, vernacular, vulgar tongue.