Run down when a dollar's found in the rubbish (5)
I believe the answer is:
roast
'run down' is the definition.
Although both the answer and definition are verbs in their base form, I don't see how one could define the other.
'a dollar's found in the rubbish' is the wordplay.
'dollar' becomes 's'.
'found in' is an insertion indicator.
'the rubbish' becomes 'rot' (both can mean nonsense).
'a'+'s'='as'
'as' put within 'rot' is 'ROAST'.
'when' acts as a link.
Can you help me to learn more?
(Other definitions for roast that I've seen before include "Cook; criticise" , "Traditional dinner" , "Honey-based drink" , "Cooked joint" , "Cook in oven or by exposure to heat" .)