Embargo not applicable about a fruit (6)
I believe the answer is:
banana
'fruit' is the definition.
(type of fruit)
'embargo not applicable about a' is the wordplay.
'embargo' becomes 'ban' (I've seen this in other clues).
'not applicable' becomes 'na' (this might be a standard abbreviation of which I'm unaware).
'about' shows that the letters should be reversed in order.
'na' in reverse letter order is 'an'.
'ban'+'an'+'a'='BANANA'
Can you help me to learn more?
(Other definitions for banana that I've seen before include "Sub-tropical fruit" , "Tropical yellow fruit" , "that may be unzipped" , "Fruit item" , "6 Yellow fruit" .)