The story
From the fictional character Huckleberry Finn created by the American author Mark Twain.
Etymology from Wiktionary, CC BY-SA 4.0.
Huckleberry Finn
Today it means: 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). Full definition →