Other forms: sideboards
A sideboard is a long low cupboard for dishes in a dining room. A mahogany sideboard, on the sideboard, clear the sideboard.
It stands against the wall and holds the plates, the glasses and whatever is being served, which is what it was designed for in the eighteenth century. In British slang, sideboards are also long side whiskers, which Americans call sideburns.
1nounsideboardA long low cupboard for dishes in a dining room.
“The best china was kept in the sideboard in the dining room.”
sideboard is a cupboard.
Side plus board. Board here means a table, which is the old sense also found in room and board.
From side + board.
Etymology from Wiktionary, CC BY-SA