Meanings
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1
noun
a low cabinet used in a dining room for storing tableware and serving food
She took a clean glass from the sideboard and poured the guests some water.
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2
noun
a board forming or extending the side of a bed, wagon, truck, or similar structure
The farmer raised the wagon's sideboard so it could carry a larger load of grain.
Thesaurus
Etymology
A compound of side + board. It first referred to a board or table placed at the side of a dining room for displaying or serving food; by the eighteenth century it denoted the cabinet-like piece of furniture. The literal compound also names boards attached to the sides of beds and vehicles.