Huckleberry Finn noun1 •A person who has a boyish innocence and a spirit of curiosity, along with a reluctance to accept social norms and a desire for exploration and adventure (especially exploring by floating down a river).George Bancroft, the Huckleberry Finn of the American screen, comes back with one of his best performances in "The Docks of New York". — 1928 formsHuckleberry Finns