DUNUM1. In Ireland, mentioned by Ptolemy (Ptol. 2.2.10) as a town of that island.2. D. SINUS(Δούνον κόλπος), a bay in Britain, mentioned by Ptolemy (Ptol. 2.3.6). Name for name, and place for place, Dun-s-leyBay, near Whitby, in Yorkshire. [R.G.L]