spiraling

1.

螺旋状の

a shape made up of curves, each one above or wider than the one before:

:
A corkscrew is spiral-shaped.
1.

螺旋状の

to move in a spiral:

:
With one wing damaged, the model airplane spiraled downward.
1.

螺旋状の

shaped in a series of curves, each one above or wider than the one before:

:
a spiral staircase