rotator (?.)
- carousel
- centrifuge
- chuck
- disk
- drill
- extractor
- fan
- governor
- gyroscope
- impeller
- jack
- merry-go-round
- propeller
- reel
- roller
- rolling pin
- rolling stone
- rotary drill
- rotor
- roundabout
- rundle
- screw
- spindle
- spinner
- spit
- spool
- teetotum
- top
- treadmill
- turbine
- turntable
- wheel
- whirlabout
- whirler
- whirligig
- whorl
- windmill