The term plumb can be used as a verb to describe the activity of a plumber running water supply and drain pipes in a building, but the more important use of the term comes in the context of general construction or carpentry.
What Is Plumb?
In construction or carpentry, the term plumb refers to a line or feature that is perfectly vertical. In technical design, it represents an imaginary line that runs straight to the center of the earth. Plumb is the counterpart to level, which means to be perfectly horizontal.
As floors, countertops, and pool tables must be level, vertical elements such as columns, walls, and uprights must be...
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