Port a person knocked back after golf (5)
I believe the answer is:
genoa
'port' is the definition.
(I've seen this before)
'a person knocked back after golf' is the wordplay.
'a person' becomes 'aone' (I can't justify this - if you can you should believe this answer much more).
'knocked back' is a reversal indicator.
'after' says to put letters next to each other.
'golf' becomes 'g' (phonetic alphabet: alpha, bravo, charlie etc.).
'aone' in reverse letter order is 'enoa'.
'enoa' after 'g' is 'GENOA'.
Can you help me to learn more?
(Other definitions for genoa that I've seen before include "Italian city; sail" , "City of Italy" , "Type of rich fruit cake" , "NW Italian sea port" , "North Italian port" .)