This is the 12054th most frequent Russian word.
зоопарке
"Зоопарке" means "in the zoo."
In this sentence, "зоопарке" indicates a destination or venue where the activity will occur, marking it as a setting.
Мы проведём выходные в зоопарке.
We will spend the weekend at the zoo.
In this sentence, "зоопарке" is used with the preposition "в" which in conjunction with the prepositional case indicates a location.
Дети играли в зоопарке.
The children were playing at the zoo.
Here, "зоопарке" is used to describe a general presence or existence of something within the zoo.