Left port with many parcels (5)
I believe the answer is:
laden
'left port with many parcels' is the definition.
Although both the answer and definition are past participle verbs, I don't see how they can define each other.
'left port' is the wordplay.
'left' becomes 'l' (common abbreviation).
'port' becomes 'aden' (port in Yemen).
'l'+'aden'='LADEN'
Can you help me to learn more?
(Other definitions for laden that I've seen before include "charged a lot" , "Put on board" , "full cargo ship" , "Heavily loaded" , "Weighed down with much cargo" .)