Definition for PLUMB

PLUMB, n. [plum; Fr. plomb; Sp. plomo; It. piombo; W. plum; L. plumbum, lead; probably a clump or lump.]

A mass of lead attached to a line, and used to ascertain a perpendicular position of buildings and the like. But the word as a noun is seldom used, except in composition. [See Plumb-line.]

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