In 1939, the term was first appliedDavies, M. F, Pembrokeshire, Part 32 (pp 75-170) of Stamp, L. D. (Ed.), The Land of Britain, Report of the Land Utilisation Survey, London, 1939. to the linguistic frontier in southwest Wales. This is an unfortunate usage, because the linguistic boundary, in general, is neither visible nor permanent. However, many commentators have taken up the use of the word in this context in the last 50 years, so that today it is usually understood to mean the language boundary.
In 1939, the term was first appliedDavies, M. F, Pembrokeshire, Part 32 (pp 75-170) of Stamp, L. D. (Ed.), The Land of Britain, Report of the Land Utilisation Survey, London, 1939. to the linguistic frontier in southwest Wales. The linguistic boundary, in general, is neither visible nor permanent. Commentators have taken up the use of the word in this context in the last 50 years, so that in the 21st century it is usually understood to mean the language boundary.
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