From Longman Dictionary of Contemporary Englishplumbingplumb‧ing /ˈplʌmɪŋ/ noun [uncountable] 1 TBBDHthe pipes that water flows through in a building We keep having problems with the plumbing.2 TBBDHthe work of fitting and repairing water pipes, baths, toilets etc
Examples from the Corpus
plumbing• For extended periods of a week or more, you must drain down the household plumbing system.• Since moving in seven years ago they have put in new windows, new plumbing, sinks and lavatories.• We saw it as an opportunity to demystify the male worlds of plumbing, electricity and carpentry.• Fiction, then, is rather like architecture or plumbing - a necessary art.• I hardly think you went to all this trouble just to check the plumbing.• I think there's something wrong with the plumbing.• Damp at floor level will nearly always be due to plumbing and heating pipe leaks. 