A revolving mass of water which forms a Whirlpool. A spiral motion of fluid within a limited area, especially a whirling mass of water or air that sucks everything near it toward its center. This whirlpool is caused by water flowing out of a small opening in the bottom of a basin or reservoir. A funnel-shaped opening is created downward from the water surface.
VORTEX
Meaning of VORTEX in English
Environmental engineering English vocabulary. Английский словарь экологического инжиниринга. 2012