This is the 503rd most frequent Turkish word.
olurken
"While happening" or "while becoming."
'Oynarken' indicates the simultaneous action of children playing when a new event (rain starting) occurred.
Bahçede çocuklar oynarken yağmur başladı.
While the children were playing in the garden, it started raining.
'İzlerken' shows the simultaneous action of watching during which the secondary event (falling asleep) happened.
Film izlerken uyuyakaldım.
While watching the movie, I fell asleep.
'Doğarken' refers to the time when the sun is rising, expressing an ongoing or simultaneous action.