Plumb Line (Noun)
Meaning
A cord from which a metal weight is suspended pointing directly to the earth's center of gravity; used to determine the vertical from a given point.
Classification
Nouns denoting man-made objects.
Examples
- The architect used a plumb line to ensure the walls of the new building were perfectly vertical.
- The surveyor carefully checked the plumb line to determine the exact depth of the foundation.
- In the absence of modern technology, the ancient Egyptians used a plumb line to align the pyramids with precision.
- To hang the picture frame straight, she used a plumb line to mark the spot where the nail should go.
- The carpenter relied on his trusty plumb line to build a staircase with perfectly level steps.