A starship (or shwoop) is a type of vehicle that is capable of supporting a crew traveling over interstellar distances. Starships are capable of faster-than-light speeds using warp drive or other propulsion methods. A starship's specification is largely determined by its class.
...in others words, it's something that makes you go. Except when used as a killing device. Anyone wonder why a "science exploration vessel" really needs quantum torpedoes?
There are two types of starships. Those that kill, and those that get killed.
The first type are very big, fast, and carry lots of "killing devices". The second type are........wait, why should I waste my time on them?