This is the 12943rd most frequent Turkish word.
kalbinin
"Of your heart"
Here, 'kalbinin' is a possessive form referring to 'your heart', expressing personal possession.
Kalbinin güzelliği dışına yansıyor.
The beauty of your heart reflects outward.
In this sentence, 'kalbinin' indicates possession and suggests an intimate or internal aspect of the heart.
Kalbinin derinliklerinde sakladığın sırları biliyorum.
I know the secrets you hide deep in your heart.
Here, 'kalbinin' represents symbolic imagery of the heart as a source of guidance.