plumb

nouns

the metal bob of a plumb line

verbs

measure the depth of something
is derived from
is a type of (narrower)
express as a number or measure or quantity
"Can you quantify your results?"
weight with lead
is a type of (narrower)
weight down with a load
examine thoroughly and in great depth
is a type of (narrower)
examine minutely
adjust with a plumb line so as to make vertical
is a type of (narrower)
alter or regulate so as to achieve accuracy or conform to a standard
"Adjust the clock, please"; "correct the alignment of the front wheels"

adjectives

exactly vertical
"the tower of Pisa is far out of plumb"
is similar to
at right angles to the plane of the horizon or a base line
"a vertical camera angle"; "the monument consists of two vertical pillars supporting a horizontal slab"; "measure the perpendicular height"

adverbs

completely; used as intensifiers
"clean forgot the appointment"; "I'm plumb (or plum) tuckered out"
conforming to the direction of a plumb line
exactly
"fell plumb in the middle of the puddle"