This is the 13678th most frequent Turkish word.
kuyumuzun
"Our well's" (possessive form).
In this sentence, 'kuyumuzun' acts as a possessive noun meaning 'of our well,' indicating the well belongs to us.
Kuyumuzun suyu her zaman temizdir.
The water of our well is always clean.
Here, 'kuyumuzun' specifies 'of our well,' directing association with the well we own.
Kuyumuzun kenarını taşlarla süsledik.
We decorated the edge of our well with stones.
Here 'kuyumuzun' again illustrates possession of 'our well,' creating a contextual setting about the surrounding flowers.