| Steamboat (n.) A boat or vessel propelled by steam power; -- generally used of river or coasting craft, as distinguished from ocean steamers. Thesaurus Entries boat, canoe, carry sail, circumnavigate, coast, cross, cruise, go by ship, go on shipboard, go to sea, make a passage, motorboat, navigate, ply, row, run, sail, sail round, sail the sea, scull, seafare, steam, steamer, steamship, take a voyage, traverse, voyage, yacht | ![]() |