This is the 5507th most frequent Polish word.
troje
"Troje" means "three" and is used for collective nouns or groups of people/things in Polish.
The word 'troje' is used to refer to a group of three people, specifically children in this context.
Troje dzieci bawi się w ogrodzie.
Three children are playing in the garden.
Here, 'troje' refers to three individuals, emphasizing mixed gender or unspecified group characteristics.
Do pokoju weszło troje ludzi.
Three people entered the room.
In this sentence, 'troje' is applied to a group of three friends, implying a mixed group rather than specifying gender.