Definition of "pumper" [pump•er]

• One who pumps something (noun)
• Steroids or other drugs taken to improve blood flow and increase muscular size. (noun)

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• "This truck which my brothers later told me is called a pumper showed up one morning with a cement mixer."
• "So she tried something else: she went to a so-called pumper, a person who illegally injects silicone to modify the body."
• "I love trucks and thought that "pumper" was just the cat's meow."