n.
Pronunciation: ' pl ə -m ə r
Function: noun
Etymology: Middle English, from Anglo-French plummer, plomner, from Latin plumbarius, from plumbum
Date: 15th century
1 : a dealer or worker in lead
2 : one who installs, repairs, and maintains piping, fittings, and fixtures involved in the distribution and use of water in a building
3 : a person whose job is to prevent or put an end to leaks of sensitive information