plugman

noun plug·man \ ˈpləgmən \

Definition of plugman

plural plugmen
1 : the member of a gun crew (as in the U.S. Navy) whose duty is to open and close the breech plug or breechblock in firing
2 : a miner who attends pumps in a mine
3 : a plugger who fastens stoppers in bottoms of billet molds in which copper is to be cast

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allowing a liquid or gas to pass through

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