BUILDER'S JACK


Meaning of BUILDER'S JACK in English

noun

1.

a. : 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

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.