Star cruiser

A star cruiser was a type of large interstellar spaceship with offensive/defensive armament. This descriptive term was applied to Federation starships and was a synonym for cruiser. Both the starships USS Valiant (23rd century) and USS Enterprise (NCC-1701) were classified by the Eminian High Council in 2267 as star cruisers. 

Less than a century later, the Zakdorn strategist Sirna Kolrami called the USS Hathaway a star cruiser.