In a vertical direction; perpendicularly. / (informal) Squarely, directly; completely.

To determine the depth, generally of a liquid; to sound. / To attach to a water supply and drain.

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.

A little mass of lead, or the like, attached to a line, and used by builders, etc., to indicate a vertical direction.

Obsolete form of plum (“the fruit”).

(chemistry) Alternative form of plumbo-; used before a vowel.

A surname.

plural of plumbing

The pipes, together with the joints, tanks, stopcocks, taps and other fixtures of a water, gas or sewage system in a house or other building. / The trade or occupation of a plumber.

Third-person singular simple present indicative form of plumb