Dear Editor, With school about to start up again it seems only appropriate to review the definition of certain political vocabulary words, in this case, "hero." "A person noted for feats of courage or nobility of purpose, especially one who has risked or sacrificed his or her life" (American Heritage Dictionary). In her letter this week Linda Curtis refers to Ralph Nader as an "American hero" ["Postmarks," Aug. 6]. As we all have learned with Clinton, one's legacy being sacrificed is a far cry from one's life. If anything, Nader is merely the kamikaze pilot flying Kerry's plane into the GOP battleships. I would like to remind Ms. Curtis that a true hero risks his life, not merely his reputation. Come November, I hope that the real American war hero, John Kerry, is able to trade his fighter jet for Air Force One.