Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- n. A notched board at either side of a staircase that supports the treads and risers.
Century Dictionary and Cyclopedia
- n. One of the notched boards of a stair to which the ends of wooden steps and risers are fastened. Also called notch-board.
Wiktionary
- n. architecture A notched board to which the treads and risers of the steps of wooden stairs are fastened.
- n. A board or plank used as a bridge.
GNU Webster's 1913
- n. (Arch.) A notched board to which the treads and risers of the steps of wooden stairs are fastened.
- n. A board or plank used as a bridge.
Etymologies
- bridge + board (Wiktionary)
Examples
“There may be a jumper setting on the drive, or on the bridgeboard within the external housing you need to change that will allow you to access the entire drive.”
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