Duro- is a Celtic word meaning "door" (cognate at the Proto-Indo-European level with English door and Latin forum) and, by extension, "enclosed market, square, forum, walled town, village".,[REF] .
Cornovium may either be a common noun in Brittonic meaning "horn, peninsula", or derive from the British Cornovii people of the Midlands, based around Wroxeter; alternately, we may have or an identically-named tribe from the area of Durocornovium.