Whirl'pōol, n.
n.
Sense 1. An eddy of water; a vortex or gulf in which the water moves round in a circle.
Sense 2. A sea-monster of the whale kind. [Obs.]
The Indian Sea breedeth the most and biggest fishes that are; among which the whales and whirlpools, called “balæna,” take up in length as much as four acres, or arpents, of land. Holland.