This is the 11975th most frequent Turkish word.
gitmesi
"Gitmesi" means "his/her/its going" or "the act of going" in English.
The word 'gitmesi' stems from the verb 'gitmek', meaning 'to go', and here it is used in a noun phrase denoting the act of going.
Okula gitmesi gerekiyor.
He needs to go to school.
In this sentence, 'gitmesi' refers to the disappearance or removal of cigarettes, reflecting a recommendation.
Doktor tavsiyesiyle sigaranın gitmesi iyi olur.
It would be good for cigarettes to go away as advised by the doctor.
Here, 'gitmesi' denotes the act of going, referring specifically to someone's attendance at the meeting.