plumb

IPA: pɫˈʌm

A little mass of lead, or the like, attached to a line, and used by builders, etc., to indicate a vertical direction.
(nautical) A weight on the end of a long line, used by sailors to determine the depth of water.
The perpendicular direction or position.
A surname.
Obsolete form of plum (“the fruit”). [The fruit and its tree.]

To determine the depth, generally of a liquid; to sound.
To attach to a water supply and drain.
(transitive, figurative) 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.
(dated) To seal something with lead.
(intransitive) To work as a plumber.
(rare) To fall or sink like a plummet.
(US, colloquial, figuratively, obsolete) To trace a road or track; to follow it to its end.
(nautical) To position vertically above or below.

Truly vertical, as indicated by a plumb line.
(cricket) Describing an LBW where the batsman is hit on the pads directly in front of their wicket and should be given out.

Examples of "plumb" in Sentences

The men defaced the plumbings.
Check the plumbing and the wiring.
He engaged in the plumbing business.
Do we need the link to the plumbing
Plumbing was later added in the 1950s.
The first bathtub with plumbing was in 1870.
It is difficult to plumb other people's mind.
All wiring and plumbing in the house was replaced.
Electricity and plumbing was installed in the house.
It is not necessary to plumb to the depths of his soul.
His own dexterity in catching the phrase plumb in the middle gave him a thrill of excitement.
The dirt airstrip cut into a grove of black cottonwoods was adequate without being what you could call plumb level or arrow straight.
Silently, but with unerring certainty, something small, round, and deadly, fell plumb from the library ceiling to where the settle had formerly stood against the hearthstone.
References: la poubelle (f) = garbage can; plum (just in case, and for the French readers on this list, "plum" is English and the informal of "plumb" -- nothing to do with the juicy fruit) = completely; la clé (f) = key; le clavier (m) = keyboard