This is the 2986th most frequent Turkish word.
ailelerini
"Their families."
In this sentence, 'ailelerini' signifies 'their families,' where 'ail-' is the root word for 'family,' and '-lerini' indicates third person plural possessive with an accusative case ending, showing that the families are the direct object being visited.
Öğrenciler tatilde ailelerini ziyaret ediyorlar.
The students are visiting their families during the holiday.
Here, 'ailelerini' refers to 'their families,' with possession attributed to the couple, and it also marks the direct object being invited.
Evlenecek olan çift, ailelerini düğüne davet etti.
The couple who are going to get married invited their families to the wedding.
In this context, 'ailelerini' means 'their families,' where the possessive indicates the families of the students, and the accusative signals the focus of care.