1) Originally a board or table on which cups and other kitchen items were placed. However, it came eventually to be used of a piece of furniture for holding crockery, a sideboard, and the association with 'cup' was soon lost.
1434 unam aliam mensam vocatam le copborde, Campsall
1485 unum armariolum cum copeborde super eodem, ijs, Ripon
1502 unum Cownter et unum Cubbord de Cipris cum tabulis, Liversedge
1552 to my cosyn ... a cupborde, a cownter, Womersley
1568 24 standinge Cubbordes for Chamberes, Healaugh
1579 one little cubbord or presser, Fewston
1619 Item, one cowbard, Bingley. Used attributively: 1423 ij coopertoriis vocatis copeburde clothys, York
1614 j table-cloth ij coberd clothes, Stockeld.