This is the 469th most frequent Turkish word.
onların
"Their" (possessive pronoun).
The word 'onların' indicates possession, referring to 'their.'
Onların kitapları çok ilginç.
Their books are very interesting.
In this example, 'onların' means 'they're' and refers to 'the game they were playing.'
Bahçede onların oynadığı oyun çok eğlenceliydi.
The game they played in the garden was very fun.
Here, 'onların' again shows possession, this time referring to 'their speeches.'