noun
Refers to a vessel designed for pleasure cruising or a naval cruiser. Context determines whether it is a civilian cruise ship or a military cruiser.
来年の夏休みは巡航船で地中海を旅する予定です。
Next summer vacation, we plan to travel the Mediterranean on a cruise ship.
その巡航船は最新のレーダーを装備している。
The cruiser is equipped with the latest radar.
巡洋艦 is the standard term for a naval cruiser (warship). 巡航船 is less common in military contexts but can carry the same meaning.
Compound of 巡航 (cruising) and 船 (ship). The term is transparently derived from its components.