Steamship \Steam"ship`\ (-sh[i^]p`), n. A ship or seagoing vessel propelled by the power of steam; a steamer. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

steamship

Source: WordNet (r) 2.0
 

Steamship \Steam"ship`\, n. A ship or seagoing vessel propelled by the power of steam; a steamer.

Source: Webster's Revised Unabridged Dictionary (1913)