This is the 2787th most frequent Russian word.
одной
The word "одной" is the dative, instrumental, or prepositional singular feminine form of "один," meaning "one" or "a single" in English.
Describes specific characteristics or identities in the given context.
Я встретил одну девушку в одной из кафешек.
I met a girl in one of the cafes.
Refers to a shared singular condition or group.
Мы сделали это в одной команде.
We did this as one team.
Denotes singularity and focus on the object mentioned.