Right up and down, opposed to parallel.
♦ To plumb. To form the vertical line. Also, to sound the depth of water.
·adv In a plumb direction; perpendicularly. II. Plumb ·vt To seal with lead; as, to plumb a drainpi...
Webster's Dictionary of the English Language
An hundred thousand pounds. ...
Dictionary of The Vulgar Tongue by Francis Grose
A bullet.--Surfeited with a blue plumb; wounded with a bullet. A sortment of George R--'s blue plumb...
See Plumtree Court. ...
A Dictionary of London by Henry A Harben.