Empty shell with which I leave port in Ireland (5)
I believe the answer is:
sligo
'port in ireland' is the definition.
'sligo' can be an answer for 'port' (I've seen this before). I am not certain of the 'in ireland' bit.
'empty shell with which i leave' is the wordplay.
'empty' suggests removing the centre.
'with' means one lot of letters go next to another.
'which' becomes 'og' (I can't explain this - if you can you should believe this answer much more).
'leave' shows that the letters should be reversed in order (I've seen 'left' mean this).
'shell' with its centre taken out is 'sl'.
'og'+'i'='ogi'
'ogi' written backwards gives 'igo'.
'sl'+'igo'='SLIGO'
Can you help me to learn more?
(Other definitions for sligo that I've seen before include "County of northwest Ireland" , "Southern Irish county" , "part of Ireland" , "County of NW Eire" , "Ir. town by Donegal bay" .)