noun / verb
plume
PLOOM/pluːm/
A feather or featherlike cluster.
The tall ostrich plume curves gracefully beside the incense bowl.

Etymology
The original image is a soft feather. The smoke sense extends that image to a long, spreading streamer of smoke, dust, or vapor resembling a feather.
In context
It looks like a new plume, a new large plume of smoke. Now it may be that something fell off the building.
More examples
- The heron has delicate plumes on its head.
- The costume designer plumed the helmet with ostrich feathers.
- A featherlike plume of smoke rises from the chimney.
Forms
plume · plumes · plumed · pluming
plumage noun — The feathers covering a bird's body.