steamboat

n. ship driven by steam power, steamship

A steamboat or steamship, sometimes called a steamer, is a ship in which the primary method of propulsion is steam power, typically driving a propeller or paddlewheel. The term steamboat is usually used to refer to smaller steam-powered boats working on lakes and rivers, particularly riverboats; steamship generally refers to steam powered ships capable of carrying a (ship's) boat. The term steamwheeler is archaic and rarely used. Steamships gradually replaced sailing ships for commercial shipping through the 19th century, and they were in turn superseded by diesel-driven ships in the second half of the twentieth century. Most warships used steam propulsion until the advent of the gas turbine. Today, nuclear powered warships and submarines use steam to drive turbines, but are not referred to as steamships or steamboats.
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Noun
1. a boat propelled by a steam engine
(hypernym) boat
(hyponym) showboat

(n.)
A boat or vessel propelled by steam power; -- generally used of river or coasting craft, as distinguished from ocean steamers.
  

Synonyms and related words:
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