A wooden plank forming part of a floor structure.
Compound of 'floor' (Old English flōr 'bottom surface') and 'board' (Old English bord 'plank, table'). The compound emerged in the 19th century as wooden flooring became standardized in construction.
Floorboards are linguistic archaeologists' dream - they preserve the history of a building in their very name, combining two of the most fundamental concepts in human shelter: the surface we stand on and the planks we shape from trees.
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