This is the 10041st most frequent Polish word.
bawiącej
"Bawiącej" means "having fun" or "playing" (referring to a feminine subject in the genitive or locative case).
The word 'bawiącej' here is the present participle form used in the genitive case to describe the girl who is actively playing.
Grupa dzieci otoczyła dziewczynkę bawiącą się na placu zabaw.
A group of children surrounded a girl playing in the playground.
In this case, 'bawiącej' describes the daughter in the genitive case, focusing on her activity of playing.
Rodzice obserwowali córkę bawiącą się z lalkami.
The parents were observing their daughter playing with dolls.
'Bawiącej' is used to depict 'youth' in a genitive phrase, describing their playful activity.