The cottage has electricity but no 'indoor plumbing'. [=the cottage does not have a toilet or sink; there are no pipes that supply clean water to the cottage]
a store that sells 'plumbing fixtures' [=sinks, toilets, faucets, etc.]
a scientist who spent her life 'plumbing' the minds of criminals
(..) - You're Hungarian. You always disagree. - Good evening, gentlemen. - Good evening. - How is your charming wife? - Marvellous. She's in love with the hotel plumbing. She's either in the swimming pool. She swims for hours. She's a fish. lt's quite incredible. Or she's in the bath. (..)1996 The English Patient