Of, pertaining to, or resembling a cyclone.
Rotating in the same direction as the Earth i.e. anticlockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere.
Violent, severe.
Needing only a brief exposure time. (of a lens, plate, film, etc.)
Very swift or quick.
Steep, changing altitude quickly. (of a slope)
a rough section of a river or stream which is difficult to navigate due to the swift and turbulent motion of the water.