noun / verb
shimmy
SHIM-ee/ˈʃɪmi/
A rapid wavering movement from side to side.
The dancer adds a quick shimmy as the music speeds up.

Etymology
The verb first described a suggestive dance, then extended to vibration, including that of vehicles. Its origin is uncertain: a dialectal word for a chemise and a connection with shimmer are both possibilities.
In context
they would go to the salsa room and just hang out and, you know, have fun, have a drink, shake a little bit, let it shimmy.
More examples
- Her shoulders shimmy to the beat.
- The steering wheel shimmies at highway speeds.
- The mechanic checks the front tires for the cause of the shimmy.
Forms
shimmy · shimmies · shimmied · shimmying