This is the 1st most frequent Russian word.
в
The Russian word "в" means "in," "at," or "to" (preposition indicating location or direction).
In this sentence, "в" indicates location, translated as "in" in English.
Я живу в Москве.
I live in Moscow.
Here, "в" implies direction or destination, often translated as "to" in English.
Мы идём в парк.
We are going to the park.
In this context, "в" signifies that something is inside another object, expressed as "in" in English.