BS”D
???? means “killer” You see it on cans of insecticide and disinfectant in Eretz Yisroel. That would be pronounced KOYTEL in old Ashkenazi loshon hakoidesh (if the word is authentic and not a Zionist coinage – I would think it is indeed authentic) but if you asked someone which bus goes to the koytel, you would not be understood.
I don’t think you would use the word ???? at all in daily speech.