Discarded goods from planes in the morning (6)
I believe the answer is:
jetsam
'discarded goods' is the definition.
(I've seen this before)
'planes in the morning' is the wordplay.
'planes' becomes 'jets' (jet is a kind of plane).
'in the morning' becomes 'am'.
'jets'+'am'='JETSAM'
'from' is the link.
(Other definitions for jetsam that I've seen before include "Material flung overboard" , "Goods thrown into the sea" , "Goods from ship washed ashore" , "Rubbish on shore thrown from ships" , "Goods thrown overboard from ship in distress" .)