plumbing

Short definition from Wiktionary

Noun

1. 1
   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.
2. 2
   The trade or occupation of a plumber.
3. 3
   A system of vessels or ducts in the human body, especially the genitourinary system.
4. 4
   Practical, concrete work serving to support other work.
5. 5
   A Murasugi sum where each disk summed along has its boundary subdivided into four segments.
6. 6
   The genitourinary system.