This is the 14729th most frequent Turkish word.
rayına
"Rayına" means "on its track" or "on the right path" in English.
In this sentence, 'rayına' is used in the expression 'rayına oturdu', figuratively meaning to return to a normal or expected state or condition.
Her şey sonunda rayına oturdu.
Everything finally got back on track.
Here, 'rayına' refers specifically to the rail of the train and is used in its literal sense.
Tren rayına sıkışan taş nedeniyle durdu.
The train stopped because of a stone stuck on its rail.
The word 'rayına' is used metaphorically to mean aligning with the plan or falling into a proper arrangement.