octocopter
noun [ C ] uk/ˈɒk.təˌkɒp.tər/ us/ˈɑːk.təˌkɑːp.tɚ/
八旋翼无人机
a small remote-controlled aircraft like a helicopter, with eight blades that go around on top, used especially to film or photograph things from the air. An octocopter is a type of drone.
Compare: hexacopterquadcopter