A lighter or low, flat boat.

【军】平底船。

A light, floating structure, such as a flat-bottomed boat or a hollow metal cylinder, used as one of the supports of a temporary of floating bridge; sometimes, the bridge so make.

支持浮桥之平底船或金属圆柱；浮桥。

Seaplane float.

【空】(水上飞机的)浮舟。