plumber's box (English, noun)
expansion: plumber's box (plural plumber's boxes)
Senses:
glosses: a method of transferring load between joists to enable a cutout of a joist to allow for a plumbing run, by having doubled-up cross-joists to run between the two adjacent joists of the severed joist at each side of the cut
Forms:
form: plumber's boxes
tags: plural