The definition of a plumber is a professional who installs, repairs or works with pipes and water supplies.(noun)
The person who comes and installs your toilet is an example of a plumber.
See plumber in Webster's New World College Dictionary
Origin: ME < MFr plummier < L plumbarius, lead worker < plumbum, lead: see plumb
See plumber in American Heritage Dictionary 4
Origin: Middle English plummer
Origin: , from Old French plomier
Origin: , from Latin plumbārius, lead worker
Origin: , from Latin plumbum, lead. Word History: A plumber works with water pipes, once made from lead, with lead solder for the joints. The Romans used lead pipes, and the word plumber comes from the Latin word for lead, plumbum. There is no Latin, or even Indo-European, etymology for plumbum but it bears a distant similarity to the Greek word for lead, the standard form of which, molubdos, gives us the name of another element in the Periodic Table, molybdenum. Two non-standard forms, molibos and especially bolimos, are even more similar to the Latin.
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