This is the 13280th most frequent Russian word.
морозилку
"Морозилку" means "freezer" in informal Russian.
Here, 'морозилку' is in the accusative case, as it is the direct object of the action 'положил'.
Я положил рыбу в морозилку, чтобы сохранить её свежей.
I put the fish in the freezer to keep it fresh.
In this example, 'морозилка' is in nominative case, acting as the subject of the sentence.
Моя морозилка слишком маленькая для хранения большого объёма продуктов.
My freezer is too small to store a large amount of products.
'Морозилке' is in prepositional case, indicating the location of the action 'искал'.