(1):
(n.) The lead or iron pipes, and other apparatus, used in conveying water, sewage, etc., in a building.
(2):
(p. pr. & vb. n.) of Plumb
(3):
(n.) The art of casting and working in lead, and applying it to building purposes; especially, the business of furnishing, fitting, and repairing pipes for conducting water, sewage, etc.