This is the 745th most frequent Czech word.
ledě
"Ledě" is an archaic or poetic form of the Czech word for "ice" (led) in the vocative case.
Here, 'ledě' refers to the location within the ice.
V ledě zůstaly zamrzlé ryby.
In the ice, the fishes remained frozen.
Here, 'ledě' is used metaphorically to describe the conceptual cracks in his plan.
Při přemýšlení se zdálo, že má jeho plán trhliny v ledě.
During his thinking, it seemed that his plan had cracks in the ice.
In this example, 'ledě' denotes the physical ice on the surface of the river.