The writer recalled port and silo in big city (10)
I believe the answer is:
metropolis
'big city' is the definition.
(I've seen this before)
'the writer recalled port and silo' is the wordplay.
'the writer' becomes 'me' (the person who wrote the clues).
'recalled' says the letters should be written in reverse.
'and' means one lot of letters go next to another.
'port' put after 'silo' is 'siloport'.
'siloport' backwards is 'tropolis'.
'me'+'tropolis'='METROPOLIS'
'in' is the link.
(Other definitions for metropolis that I've seen before include "Urban centre" , "Very large city" , "centre of activity" , "Big city" , "Expressionist movie" .)