Answer: riverboat

AnswerCrossword Clue
RIVERBOAT

A paddlewheel may propel one

RIVERBOAT

Spot for a casino

RIVERBOAT

Mississippi vessel

RIVERBOAT
Where Mark Twain got his name.
RIVERBOAT
The Robert E. Lee.
RIVERBOATRobt. E. Lee, for one.
RIVERBOATTwain transport
RIVERBOATCasino that's partly underwater?
RIVERBOATInland craft
RIVERBOATSlow-moving craft
RIVERBOATSlower way to travel