(Old Testament) Adam''s wife in Judeo-Christian mythology: the first woman and mother of the human race; God created Eve from Adam''s rib and placed Adam and Eve in the Garden of Eden;
the day before; "he always arrives on the eve of her departure";
the latter part of the day (the period of decreasing daylight from late afternoon until nightfall); "he enjoyed the evening light across the lake";
the period immediately before something; "on the eve of the French Revolution";