plumbing

noun

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. The trade or occupation of a plumber.
3. A system of vessels or ducts in the human body, especially the genitourinary system.“My plumbing was playing up, so I had to see the doctor.”
4. Practical, concrete work serving to support other work.“This is not scientific research as such: it's just plumbing.”