steamboat

n boat powered by steam, used (esp formerly) on rivers and along coasts （沿河流或近岸海中行驶的）汽船, 汽艇（尤指旧时用的）.

steadfast, steadfastly, steadfastness, steadily, steadiness, steady, steak, steak-house, steal, stealth, stealthily, stealthiness, stealthy, steam, steam iron, steam radio, steam train, steam-engine, steam-ship, steam-shovel, steamer, steamgauge, steaminess, steamroller, steamship, steamy, steed, steel, steel band, steel wool, steel worker, steel-plated, steeliness, steelworks, steely, steelyard, steep, steepen, steepish, steeple,