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bennie is a type of:

• amphetamine, pep pill, upper, speed (noun) - a central nervous system stimulant that increases energy and decreases appetite

Domain of synset - USAGE:

• slang, cant, jargon, lingo, argot, patois, vernacular (noun) - a characteristic language of a particular group (as among thieves)
• trademark (noun) - a formally registered symbol identifying the manufacturer or distributor of a product