plumb (
http://definr.com/plumb)
adj : exactly vertical; "the tower of Pisa is far out of plumb
n : the metal bob of a plumb line [syn:
plumb bob,
plummet]
adv 1: (slang) completely; used as intensifiers; "clean forgot the
appointment"; "I'm plumb (or plum) tuckered out" [syn:
clean,
plum]
2: conforming to the direction of a plumb line
3: (informal) exactly; "fell plumb in the middle of the puddle"
[syn:
plum]
v 1: measure the depth of something
2: weight with lead
3: examine thoroughly and in great depth
4: adjust with a plumb line so as to make vertical