Stovepipe Hat Meaning

(idiomatic) A type of top hat worn mainly in the 19th century, made of silk or other materials and having a very tall, cylindrical, flat-topped crown.

Example: 1885, Mark Twain, Huckleberry Finn, ch. 21:
  One long, lanky man, with long hair and a big white fur stovepipe hat on the back of his head, and a crooked-handled cane, marked out the places.