Back, no back, no back, back? (5)
I believe the answer is:
bacon
'back back?' is the definition.
The definition and answer can be both people as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'back no back no' is the wordplay.
'back' becomes 'bac' (I can't justify this - if you can you should give a lot more credence to this answer).
'back' indicates one should take the final letters (the letter at the back).
'no' becomes 'n' (common abbreviation).
The last letter of 'no' is 'o'.
'bac'+'o'+'n'='BACON'
Can you help me to learn more?
(Other definitions for bacon that I've seen before include "Irish-born painter" , "Dried or smoked pig meat" , "Writer of essays" , "Cut of pork" , "Painter; cured meat" .)