This is the 14532nd most frequent Turkish word.
partilere
"To the parties."
In this sentence, 'partilere' is used as the dative form of 'parti' indicating direction towards or participation in parties.
Tatilde arkadaşlarımla partilere katıldık.
During the vacation, we attended parties with my friends.
Here, 'partilere' again is the dative form showing participation or association with the events 'partiler'.
Çocuklar partilere giydirdikleri kostümlerle çok eğlendiler.
The children enjoyed themselves greatly at the parties with the costumes they dressed.
In this case, 'partilere' indicates the places or events (parties) to which an invitation is extended.