1. Members of a Chinese secret society or gang, especially one involved in organized crime or extortion in 19th and early 20th century America.
Usage: historical; often capitalized; primarily U.S. usage
2. A person who engages in unscrupulous or corrupt practices, especially in politics or business.
Usage: informal; dated

Examples

• The highbinders controlled much of the illegal activity in the Chinese quarter of San Francisco.
• Police worked to dismantle the highbinders' extortion racket in the city.
• Historical accounts describe the highbinders as a powerful criminal organization.
• The mayor was accused of being in league with the highbinders.
• Highbinders used intimidation and violence to maintain their control over the community.