- an infectious, nonvenereal tropical disease, primarily of children, characterized by raspberrylike eruptions of the skin and caused by a spirochete, Treponema pertenue, that is closely related to the agent of syphilis.
- an infectious nonvenereal disease of tropical climates with early symptoms resembling syphilis, characterized by red skin eruptions and, later, pain in the joints: it is caused by the spiral bacterium Treponema pertenue