This is the 7457th most frequent Turkish word.
göbek
Belly; navel.
Here, 'göbek' refers to the act of 'belly' dancing, as it is culturally associated with such a dance common in Turkey.
Göbek attıktan sonra herkes çok eğlendi.
Everyone had much fun after dancing the belly dance.
In this sentence, 'göbek' directly refers to the physical area of the body, the belly or abdomen.
Onun göbeği biraz ağrıyordu.
Their belly was aching a bit.
This usage of 'göbek' metaphorically refers to an umbilical cord, representing a deep human connection.