plumbers

noun

1. 1

   One who works in or with lead.

2. 2

   One who furnishes, fits, and repairs pipes and other apparatus for the conveyance of water, gas, or drainage.

3. 3

   A person who investigates or prevents leaks of information

4. 4

   In the Royal Navy, an apprentice, a boy aged 16 to 18, who is trained in technical skills at the Dockyard Schools to become an artificer.

5. 5

   A urologist.