Pipework for a Household Bathroom
Puzzle 9 of Time Hard Pack
Question is: Pipework for a Household Bathroom
and the answer is: PLUMBING
Word Meaning:
PLUMBING — 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.
Definitions from Wiktionary.