- Rotating arm - One who, or that which, revolves; specifically, a firearm
( commonly a pistol) with several chambers or barrels so arranged as to
revolve on an axis, and be discharged in succession by the same lock; a
repeater.
- A spinning part - Arm goes round. whichever way you look at it - Chopper blade - Going up or down, it goes round and round - Helicopter blade - Helicopter blade can go either way - Helicopter part