blackfoot/ˈblæk.fʊt/EtymologyCalque of Blackfoot Siksiká (literally “black foot”).nameThe Algonquian language of these people.A city, the county seat of Bingham County, Idaho, United States.nounA member of a North American confederacy of several tribes.“Bears and other ferocious beasts resented man's intrusion into their domain; so, too, did the Blackfoot Indians and other tribes, whose savage hostility was a constant menace to the lives of the toiling engineers.”A tropical American bush of the genus Melampodium.