plumbing

noun

1. (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.

   “Water was dripping from the ceiling, so we figured there was a problem with the plumbing.”

2. (countable, uncountable)The trade or occupation of a plumber.
3. (countable, informal, uncountable)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.”

   “I am sure that there are those who dislike me […] but as a person, not for the sake of my plumbing.”

   “‹Why did I always think the ladies' room would be less gross? How do you girls freaking miss with your plumbing!?›”

4. (countable, figuratively, informal, uncountable)Practical, concrete work serving to support other work.

   “This is not scientific research as such: it's just plumbing.”

5. (countable)A Murasugi sum where each disk summed along has its boundary subdivided into four segments.
6. (countable, euphemistic, slang, uncountable)The genitourinary system.