tourbillon

noun4

1. •
   A whirlwind.
2. •
   A rotating frame, containing the escapement of a clock or watch, that significantly compensates for the effects of gravity.

   • In their final year, each student must make their own watch with a complication—from a tourbillon to a chiming mode to having a date display. — 2023
3. •
   Any part of a machine with a spiral movement.
4. •
   A kind of firework that gyrates in the air.