This is the 5459th most frequent Russian word.
плойке
The Russian word "плойке" refers to a "curling iron" in the dative or prepositional case.
Here, 'плойке' refers to a curling iron in the instrumental case, as it is the tool being used for styling.
Она укладывает волосы на плойке.
She styles her hair with a curling iron.
In this sentence, 'плойке' refers to the curling iron in the prepositional case, describing a characteristic of the curling iron.
На плойке установлена удобная ручка.
The curling iron has a comfortable handle.
Here, 'плойку' is the accusative form of 'плойка,' indicating the object being acted upon (handed over).