builder's jack


Definition of builder's jack

1a : a bracket that rests on a windowsill and projects outside for a worker to stand or sit upon in repairing a window
b : a bracket fastened to a wall to support a scaffold
2 : a jack (as a jackscrew) used by builders

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Cite this Entry

“Builder's jack.” Dictionary, Merriam-Webster, Accessed 24 Nov. 2020.

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