This is the 9397th most frequent Russian word.
той
"That" (indicating a specific object or person).
As a determiner meaning 'that', referring to a specific mentioned person.
Той человек, о котором ты говорил, уже приехал.
The person you were talking about has already arrived.
As a modifier indicating a specific location, referring to a previously mentioned or understood room.
Мы играем в той комнате.
We are playing in that room.
As a descriptor indicating a specific time, denoting a period discussed or understood in context.