F for fag (6,3)
I believe the answer is:
filter tip
This could be a double definition.
'f for' is the first definition.
The definition suggests a singular noun which matches the answer.
'fag' is the second definition.
(I have seen 'A fag' mean 'filter tip' so perhaps 'fag' could also mean 'filter tip')
Can you help me to learn more?
(Other definitions for filter tip that I've seen before include "Cigarette feature" , "Tobacco purifier" , "Cigarette with an attachment for removing some of the harmful substances" , "A fag" .)