The plumb line is a vertical straight line.
A plum-line is used to mark a line that is perpendicular to the ground.
The homonym of "plum" is "plumb," which refers to a weight on the end of a line to measure water depth or a tool used for finding the vertical in construction.
by calculating the fixture unit requirements and the pitch of the piping for proper drainage
Plum trees have roots that are mostly 12 inches to 18 inches deep and go to the drip line. A few of the roots will go about five feet down to anchor the tree.
a plum
The word "plum" can function as a noun or an adjective.
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The Wabash Valley Fault System is the main fault line found in Indiana, stretching for over 100 miles through the southwestern part of the state. It is responsible for occasional minor earthquakes in the area.
Plum
a small plum
No a plum stone is a kernal, the plum seed is located in the centre of the stone