Other crossword clues for answer "RIVERBOAT"RIVERBOATEarly western that took place on the EnterpriseMississippi vesselA paddlewheel may propel oneSpot for a casinoMeans of travel in 23 Across.Where Mark Twain got his name.The Robert E. Lee.Robt. E. Lee, for one.Twain transportCasino that's partly underwater?Inland craftSlow-moving craftSlower way to travel