a device for determining perpendicularity, consisting of a narrow board with a plumb line and bob suspended from an upper edge.
a plumb line attached to a narrow board, used by builders, surveyors, etc
noun, Chemistry. 1. .
[pluhm-buh m] /ˈplʌm bəm/ noun, Chemistry. 1. 2 (def 1). /ˈplʌmbəm/ noun 1. an obsolete name for lead2 plumbum plum·bum (plŭm’bəm) n. The metallic element lead.
[pluhm-kot] /ˈplʌm kɒt/ noun 1. a hybrid tree produced by crossing the and the . 2. the fruit of this tree.
noun 1. a duff containing raisins.