plumbing

plumbing /ˈplʌmɪŋ/ noun
plumbing
/ˈplʌmɪŋ/
noun
Britannica Dictionary definition of PLUMBING
[noncount]
1 
: a system of pipes that carries water through a building
2 
: the work of a plumber : the job of installing and repairing sinks, toilets, water pipes, etc.