n. 1. A long, low piece of dining room furniture having drawers and shelves for storing linens and tableware and a flat surface for serving food or displaying items. 2. A board that forms a side or part of a side: the sideboards of a skating rink. 3. sideboards Chiefly British Sideburns. [Sense 3, probably alteration of SIDEBURNS.] |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.