ooh, vortex...
maybe, just like knots, a pile of different names can apply,
technical, descriptive,
typographical would be good,
whimsical;
and personal favourites will stick,
yeh i'm not convinced of 'pinwheel' either,
iris is pretty good, as it's got overlapping structure, like the weaving of cord,
but - downside - also homonym of the flower ... loss of specificity
basically, what is that weave pattern called?,
plain under, over, under weaving? 'weaving', i guess!
- oh it's right there in your avatar!
that coaster card is the shape!
looking at it, i wonder if it's 'about' an L shape, as much as it is about a T shape;
anyways...
vortex star,
cyclone ...
aha - a browse of 'cyclone symbol' shows our meteorological symbol is a 'p,d'...
others use a 6,9 or b,q symbol ...
you guys call them tornados, i think
(hurricane, i should say)
so, it sort of exists in weather map typography
- apparently exists as an emoji 🌀 oh i found it !
...