This is the 10693rd most frequent Turkish word.
cüzdanı
Wallet.
In this sentence, 'cüzdanını' implies possession, referring to 'your wallet'.
Cüzdanını masanın üzerinde gördüm.
I saw your wallet on the table.
Here, 'cüzdanı' indicates possession ('his/her wallet') and is the subject of the cause of being upset.
Cüzdanı çalındığı için çok üzgündü.
He was very upset because his wallet was stolen.
In this sentence, 'cüzdanı' identifies the object (the wallet) that the action is directed towards.