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|Noun||1.||rotating mechanism - a mechanism that rotates|
bearing - a rotating support placed between moving parts to allow them to move easily
cam - a rotating disk shaped to convert circular into linear motion
Ferris wheel - a vertical rotating mechanism consisting of a large wheel with suspended seats that remain upright as the wheel rotates; provides a ride at an amusement park
gyroscope, gyro - rotating mechanism in the form of a universally mounted spinning wheel that offers resistance to turns in any direction
mechanism - device consisting of a piece of machinery; has moving parts that perform some function
rotor - rotating mechanism consisting of an assembly of rotating airfoils; "there are horizontal rotors on a helicopter or compressor rotors in a jet engine"