Complaint from porter maybe intended to be picked up (7)
I believe the answer is:
ailment
'complaint' is the definition.
(I know that complaint can be written as ailment)
'porter maybe intended to be picked up' is the wordplay.
'porter maybe' becomes 'ail' (I can't justify this - if you can you should believe this answer much more).
'intended' becomes 'meant' (to mean something is to intend it).
'to be picked up' shows a homophone (sound like) (I've seen 'is picked up' mean this (pick up can mean to hear)).
'meant' is a homophone of 'ment'.
'ail'+'ment'='AILMENT'
'from' is the link.
Can you help me to learn more?
(Other definitions for ailment that I've seen before include "Minor illness" , "Slight but persistent illness" , "Tummy upset, for instance" , "I lament (anag.)" , "Malady" .)