| 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 rotating shaft, shaft - a revolving rod that transmits power or motion rotor - rotating mechanism consisting of an assembly of rotating airfoils; "there are horizontal rotors on a helicopter or compressor rotors in a jet engine" |