This is the 7861st most frequent Turkish word.
kelsey
The word "kelsey" has no meaning in Turkish; it is likely a proper noun or name.
Here, 'Kelsey' is used as a proper noun, referring to a specific person named Kelsey.
Kelsey bugün okulda yoktu.
Kelsey was not at school today.
In this sentence, 'Kelsey' is again a proper noun, modified by the possessive suffix '-in' to denote possession, indicating that the notebook belongs to Kelsey.
Kelsey'in defteri masanın üstünde.
Kelsey's notebook is on the table.
The word 'Kelsey' is used as a proper noun here, combined with the possessive construction '-nin' for ownership, making it clear that the dog belongs to Kelsey.