Flōat'ing-brĭdge, n.
n. 1. A bridge consisting of rafts or timber, with a floor of plank, supported wholly by the water. See BATEAU-BRIDGE.
Sense 2. (Mil.) A kind of double bridge, the upper one projecting beyond the lower one, and capable of being moved forward by pulleys;—used for carrying troops over narrow moats in attacking the outworks of a fort.
Sense 3. A flat-bottomed steam ferry-boat, running on chains laid across the bottom of a river or other piece of water. [Eng.] Simmonds.