Something edible found in a container in the rubbish dump (6)
I believe the answer is:
turnip
'something edible found' is the definition.
I can't judge whether this definition defines the answer.
'a container in the rubbish dump' is the wordplay.
'a container' becomes 'urn' (urn is a kind of container).
'in the' is an insertion indicator.
'rubbish dump' becomes 'tip'.
'urn' going into 'tip' is 'TURNIP'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for turnip that I've seen before include "veggie" , "Large-rooted vegetable related to the cabbage" , "Globular food plant" , "what you eat?" , "Rip nut up for a vegetable" .)