Where does the word plumbing originate from?
"Plumbing" originates from the original name for Lead (Pb), Plumbum, which is what most pipes were made from at the time.
Instruction: Where does the word plumbing originate from?
Context: 
Response: "Plumbing" originates from the original name for Lead (Pb), Plumbum, which is what most pipes were made from at the time.