Definitions

1. noun

A cast-iron pipe filled with water under pressure for use as a source of water for fighting fires, especially in cities.

“The firefighters hooked up their hoses to a fireplug on the corner of the street.”

2. noun

A person who is a source of energy or enthusiasm, often in a business or social setting.

“She was a fireplug at the party, keeping the conversation lively and fun.”

3. noun

A device for regulating the water pressure in a fire hose.

“The fireplug was faulty and caused the water pressure to drop.”