A body of water whirling in a circle, and drawing into its centre whatever enters its waters. Whirlpools are situated in channels similar in configuration and in tidal phenomena. Chary bdis is in the Straits of Messina. Maelstrom is on the north-west coast of Norway. Corrie-vrekin is in Jura Sound, Scotland. The Niagara whirlpool is really a large eddy in which whirlpools are constantly forming.