frig·ate
noun/ˈfrɪɡət/
/ˈfrɪɡət/
- a small fast ship in the navy that travels with other ships in order to protect them
（小型）护卫舰 Word Originlate 16th cent. (denoting ‘a light, fast boat which was rowed or sailed’): from French frégate, from Italian fregata, of unknown origin.