Like certain complaints from Frenchman, back cutting meat (8)
I believe the answer is:
venereal
'like certain complaints from' is the definition.
I can't judge whether this defines the answer.
'frenchman back cutting meat' is the wordplay.
'frenchman' becomes 'rene' (common French name).
'back' says the letters should be written in reverse.
'cutting' is an insertion indicator (some letters cut their way into a word).
'meat' becomes 'veal' (veal is a kind of meat).
'rene' in reverse letter order is 'ener'.
'ener' going into 'veal' is 'VENEREAL'.
Can you help me to learn more?
(Another definition for venereal that I've seen is " Of disease or infection from sexual promiscuity".)