1. Plural of hepcat; people who are knowledgeable about and enthusiastic about jazz music and culture.
Usage: informal; dated; primarily mid-20th century slang
2. Plural of hepcat; people who are fashionable, trendy, or aware of current styles and attitudes.
Usage: informal; dated; slang

Examples

• The hepcats gathered at the jazz club every Friday night.
• Those hepcats knew all the latest bebop records.
• In the 1940s, hepcats were the ones setting fashion trends.
• The hepcats spoke their own slang that outsiders couldn't understand.
• She wanted to be one of the hepcats, so she learned all about modern jazz.
• The hepcats danced to the hottest swing bands in town.