Portland Vase, an ancient cinerary urn of dark blue glass ornamented with Greek mythological figures carved in a layer of white enamel found near Rome about 1640, and which came into the possession of the Portland family in 1787, and is now in the British Museum. It is ten inches high and seven inches round.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Portland, Isle of * Porto Rico