Light pack found in dumping site (8)
I believe the answer is:
landfill
'in dumping site' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
'light pack' is the wordplay.
'light' becomes 'land' (light can mean to settle or land).
'pack' becomes 'fill' (I am not sure about this - if you are sure you should believe this answer much more).
'land'+'fill'='LANDFILL'
'found' is the link.
Can you help me to learn more?
(Other definitions for landfill that I've seen before include "Disposal of waste by burying" , "Rubbish buried in site" , "refuse to go there!" , "Rubbish disposal site" , "Buried waste material" .)