euripus

Etymology
, from ; from +.

Noun

 * 1) A strait; a narrow tract of water, where the tide or a current flows and reflows with violence, like the ancient firth of this name between Euboea and Boeotia.
 * 2)  A flux and reflux.

Noun

 * 1) narrow channel, strait
 * 2) canal, conduit, aqueduct
 * 3) (in particular) the water-filled trench that ran around the track of the  or ran down along the centre of the racing track