This is the 14895th most frequent Turkish word.
sapan
Slingshot.
In this sentence, 'sapan' refers to a slingshot, which is a tool or toy used for shooting projectiles.
Çocuklar bahçede sapan ile oyun oynuyor.
The children are playing with the slingshot in the garden.
Here, 'sapan' means 'veered off' in the sense of deviating from a path.
Sürücü, hızını kontrol edemeyince araç yoldan sapan.
The driver couldn't control the speed, so the vehicle veered off the road.
In this context, 'sapan' is used metaphorically to describe 'wandering sunlight,' implying movement away or deviation.