<OL TYPE="1"><LI>resembling or forming two seas: thus of the Euxine Sea<LI>lying between two seas, i.e. washed on both sides by the sea<OL TYPE="a"><LI>an isthmus or tongue of land, the extremity of which is covered by the waves<LI>a projecting reef or bar against which the waves dash on both sides</OL></OL>