An urn is a vase, ordinarily covered and without handles that usually has a narrowed neck above a footed pedestal. Knife urns on pedestals flanking a dining-room sideboard were an English innovation of the late 1760s that went out of fashion following decade.
In Classical term: A large decorative container of wood, metal, pottery, etc. In furniture, a large wooden vase like container which was usually set on a pedestal on either side of a side table. This was the characteristic of Adam designs and also of Hepplewhite's work. Urns were also used as decorative turnings at the cross points of stretchers in the 16th and 17th century furniture designs, The urn and the vase were very often set on the central pedestal in a "broken" or "swan's" neck pediment --- The Dictionary of Interior Design by Martin Pegler
The discovery of a Bronze Age urn burial in Norfolk prompted Sir Thomas Browne to deliver a careful description of the antiquities found, and then expand to give a survey of most of the burial and funerary customs, ancient and current, of which his era was aware, in Hydriotaphia or Urn Burial (1658).
The Ashes, the prize in the biennial Test cricket competition between England and Australia, are contained in a miniature urn. Urns are a common form of architectural detail and garden ornament. Well-known ornamental urns include the Waterloo Vase.
A tea urn is a heated metal container traditionally used to brew tea or boil water in large quantities in factories, canteens or churches, i.e. is it not usually found in domestic use. It has a small tap near the base for extracting either tea or hot water.