fish ladder

A dam with a series of steps to enable fish to ascend the fall by a succe ion of leaps. [FISH-WAY.] fish-leaves, s. Bot.: Potamogeton natans. ( Britten & Holland.) *fish-leep, fysch-leep, s. A fish-basket. *fish-lock, s. A fish-weir. fish-louse, s. Zoology: 1. The Crustaceous genus Caligus, order Poecilopoda. The species are parasitic upon various fishes. 2. The Crustaceous genus Cymothoa, belonging to the Isopod a.