Толковый словарь английского языка - domino

noun (plural -noes or -nos) Etymology: French, probably from Latin (in the ritual formula benedicamus Domino let us bless the Lord) Date: circa 1694 1. a. a long loose hooded cloak usually worn with a half mask as a masquerade costume, a half mask worn over the eyes with a masquerade costume, a person wearing a ~, 2. a flat rectangular block (as of wood or plastic) whose face is divided into two equal parts that are blank or bear usually from one to six dots arranged as on dice faces, any of several games played with a set of usually 28 ~es, a member of a group (as of nations) expected to behave in accordance with the ~ theory