plumb bob(redirected from Plumb-bob)
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Related to Plumb-bob: plumb line
A usually conical metal weight attached to the end of a plumb line. Also called plummet.
(Building) the weight, usually of lead, at the end of a plumb line; plummet
1. the piece of lead or other weight attached to a plumb line; bob of a plumb line.v.i.
2. to fall straight or sharply down; plunge.
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|Noun||1.||plumb bob - the metal bob of a plumb line |
bob - a hanging weight, especially a metal ball on a string