This is the 7409th most frequent Polish word.
kobylnica
"Kobylnica" is a Polish word that can refer to a place name or, historically, a structure for keeping horses or a station for horse trading.
Here, 'kobylnica' is used as a proper noun referring to a specific place.
Kobylnica to miejscowość w Polsce.
Kobylnica is a locality in Poland.
In this usage, 'kobylnica' could refer to a structure related to horse care (though this usage is less common or archaic).
Kiedyś na wsi trzymano dużą kobylnicę dla koni.
In the past, a large stable was kept for horses in the village.
Once again, 'kobylnica' is applied as a proper noun specifying a location.