This is the 4477th most frequent Russian word.
востоку
"Востоку" means "to the east" in English.
In this sentence, 'востоку' is used as part of the phrase 'к востоку,' which means 'to the east,' indicating a direction of movement.
Мы отправились к востоку, чтобы встретить рассвет.
We headed east to witness the sunrise.
Here, 'востоку' is part of the phrase 'к востоку от,' denoting the relative position or direction of the house in relation to another reference point.
Дом находится к востоку от парка.
The house is located to the east of the park.
Although 'на востоку' is not standard (correct form is 'на востоке'), this demonstrates how variations might appear in non-standard or poetic contexts to express location within an eastern region.