verb
plumb
To fit pipes and connected fixtures.
The contractor plumbs the new bathroom before installing the tile.
Etymology
Lead was widely used in pipes and other water fittings. The verb developed from working with that metal to installing pipes and connected fixtures generally.
More examples
- They plumbed the new sink into the existing drain.
- We need to plumb the addition before closing the walls.
- She is plumbing a water line to the refrigerator.