A frigate is a large boat that's used by a military during wartime. If you join the Navy, you may be assigned to work on a frigate. Ahoy!
The word frigate has been used for a variety of seagoing vessels ever since the late 15th century. Over time, it's generally referred to larger and larger boats — the original frigates had oars and sails. One thing most frigates have had in common is maneuverability, or the ability to move with speed and agility. Today's frigate often carries a guided missile launcher.