e/Vortex ring

Information
has gloss	eng: A vortex ring, also called a toroidal vortex, is a region of rotating fluid moving through the same or different fluid where the flow pattern takes on a toroidal (doughnut) shape. The movement of the fluid is about the poloidal or circular axis of the doughnut, in a twisting vortex motion. Examples of this phenomenon is a smoke ring or a microburst, , .
lexicalization	eng: vortex ring
instance of	(noun) a powerful circular current of water (usually the result of conflicting tides) maelstrom, whirlpool, vortex

Meaning
German
has gloss	deu: Wirbel (althochdeutsch (h)wirbil, (h)wirvil, von (h)werban, (h)werfan „sich drehen“) bezeichnet
lexicalization	deu: Wirbel

Media
media:img	V-22 Osprey tiltrotor aircraft.jpg
media:img	Vortex ring of microburst.gif
media:img	Vringrah66.jpg