opadovou
Opadovou is a Czech grammatical form rather than a standalone concept. It is the feminine accusative singular (and, depending on the sentence, instrumental) form of the adjective opadová, which is derived from the noun opad meaning leaf fall or shedding. The basic sense of the adjective opadová is related to autumn leaf fall, leaf litter, or processes associated with defoliation.
In practice, opadovou appears in phrases where a feminine noun is in the accusative or instrumental case,
Related concepts include opad (the act or period of leaf fall) and opadová vrstva (the leaf-litter layer).