eve (Noun) — The day before. ex. "he always arrives on the eve of her departure"
eve (Noun) — The period immediately before something. ex. "on the eve of the French Revolution"
eve (Noun) — The latter part of the day (the period of decreasing daylight from late afternoon until nightfall). ex. "he enjoyed the eve light across the lake"
eve (Noun) — (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.