language: [13] Like English tongue, Latin lingua ‘tongue’ was used figuratively for ‘language’; from it English gets linguist [16] and linguistic [19]. In the Vulgar Latin spoken by the inhabitants of Gaul, the derivative *linguāticum emerged, and this became in due course Old French langage, source of English language. (The u in the English word, which goes back to the end of the 13th century, is due to association with French langue ‘tongue’.) => linguistic
