Noun
a game in which jackstones are thrown and picked up in various groups between bounces of a small rubber ball
Source: WordNetActivities for children and young people included hoop rolling and knucklebones (astragali or "jacks"). Source: Internet
It is theorized that dice developed from the practice of fortunetelling with the talus of hoofed animals, colloquially known as " knucklebones ", but knucklebones is not the oldest divination technique that incorporates randomness. Source: Internet