Noun
A whirlwind.
(horology) A rotating frame, containing the escapement of a clock or watch, that attempts to compensate for the effects of gravity.
A kind of firework that gyrates in the air.
Any part of a machine with a spiral movement.
Source: en.wiktionary.orgThe system, which is regulated by a double-barrel system, incorpo-rates the magnificence and extreme precision of a flying tourbillon, nested in a gold ring at 6 o’clock. Source: Internet
More than 200 years ago, the development of the tourbillon provided an ingenious solution for a technical problem that had previously impacted the accuracy of a watch. Source: Internet