A rubbish bin used outside is not loaded (8)
I believe the answer is:
unbiased
'not loaded' is the definition.
The answer and definition are different parts of speech. However, past participle verbs and adjectives occasionally mean the same thing.
'a rubbish bin used outside' is the wordplay.
'rubbish' indicates anagramming the letters (a poor quality or rubbish spelling of the letters).
'outside' indicates putting letters inside.
'bin'+'used'='binused'
'binused' is an anagram of 'unbised'.
'a' put into 'unbised' is 'UNBIASED'.
'is' is the link.
Can you help me to learn more?
(Other definitions for unbiased that I've seen before include "without taking sides" , "fair" , "Not partial or prejudiced" , "Impartial" , "without side" .)