a whirlpool is a form of:

Whirlpool



noun
1.
(a current of water whirling in a circle) ទឹកកួច
ENGLISH MEANING
noun
1.
An eddy or vortex of water; a place in a body of water where the water moves round in a circle so as to produce a depression or cavity in the center, into which floating objects may be drawn; any body of water having a more or less circular motion caused by its flowing in an irregular channel, by the coming together of opposing currents, or the like.
2.
A sea monster of the whale kind.