plumbing

(countable, uncountable) The pipes, together with the joints, tanks, stopcocks, taps, and other fixtures of a water, gas, or sewage system in a house or other building.
(countable, uncountable) The trade or occupation of a plumber.
(countable, informal, uncountable) A system of vessels or ducts in the human body, especially the genitourinary system.
(countable, figuratively, informal, uncountable) Practical, concrete work serving to support other work.
(countable) A Murasugi sum where each disk summed along has its boundary subdivided into four segments.
(countable, euphemistic, slang, uncountable) The genitourinary system.