plumb
/plʌm//plʌm/noun
Definitions
A little mass of lead, or the like, attached to a line, and used by builders, etc., to indicate a vertical direction.
A weight on the end of a long line, used by sailors to determine the depth of water.
The perpendicular direction or position.
verb
Definitions
To determine the depth, generally of a liquid; to sound.
To attach to a water supply and drain.
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.
adjective
Definitions
Truly vertical, as indicated by a plumb line.
Describing an LBW where the batsman is hit on the pads directly in front of his wicket and should be given out.
adverb
Definitions
In a vertical direction; perpendicularly.
Squarely, directly; completely.
Example: It hit him plumb in the middle of his face.