A little mass of lead, or the like, attached to a line, and used by builders, etc., to indicate a vertical direction.
A weight on the end of a long line, used by sailors to determine the depth of water.
The perpendicular direction or position.
To determine the depth, generally of a liquid; to sound.
To attach to a water supply and drain.
To think about or explore in depth, to get to the bottom of, especially to plumb the depths of.
To use a plumb bob as a measuring or aligning tool.
To accurately align vertically or horizontally.
To seal something with lead.
To work as a plumber.
To fall or sink like a plummet.
To trace a road or track; to follow it to its end.
To position vertically above or below.