octocopternoun [ C ]
uk/ˈɒk.təˌkɒp.tər//ˈɑːk.təˌkɑːp.tɚ/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.
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hexacopter
quadcopter