水すい上じょう機きすいじょうきMeanings1nounseaplane; hydroplaneAircraft that can take off from and land on water. In Japanese, 水上機 is the general term covering both floatplanes and flying boats.この湖みずうみには水すい上じょう機きがよく着ちゃく水すいする。Seaplanes often land on this lake.