This is the 16973rd most frequent Turkish word.
çalmak
"Çalmak" means "to play" (an instrument), "to steal," or "to knock/ring," depending on context.
Here, "çalmak" means "to knock" on a door.
Kapıyı çalmak çok nazik bir harekettir.
Knocking on the door is a very polite gesture.
In this example, "çalmak" signifies "to play" a musical piece or instrument.
Arkadaş bir melodi çaldı ve odada güzel bir hava oluştu.
A friend played a melody, and a pleasant atmosphere filled the room.
Here, "çalmak" is used to mean "to steal."