This is the 13055th most frequent Turkish word.
kapkaççının
"Kapkaççının" means "of the snatcher" or "belonging to the mugger."
The word 'kapkaççının' is used here to indicate a possession or association with a bag snatcher, as in 'of the bag snatcher'.
Kapkaççının hızlıca kaçtığını gördüm.
I saw the thief fleeing quickly.
Here 'kapkaççının' is in the genitive case, showing ownership or relation, referring to 'the identity of the bag snatcher'.
Polis kapkaççının kimliğini tespit etti.
The police identified the bag snatcher's identity.
In this sentence, 'kapkaççının' acts as a possessive structure referring to the person attempting the action of stealing a bag, incorporated into the narrative.