Fastener on animal enclosure, extremely nasty and trashy (10)
I believe the answer is:
catchpenny
'trashy' is the definition.
Both the answer and definition are adjectives. Maybe they are linked in a way I don't understand?
'fastener on animal enclosure extremely nasty' is the wordplay.
'fastener on' becomes 'catch' (I can't justify this - if you can you should give a lot more credence to this answer).
'animal enclosure' becomes 'pen' (I've seen this in another clue).
'extremely' means to remove the middle letters (only the extremes of the word are used).
'nasty' with its middle taken out is 'ny'.
'catch'+'pen'+'ny'='CATCHPENNY'
'and' is the link.
Can you help me to learn more?
(Other definitions for catchpenny that I've seen before include "only after profit" , "superficially attractive" , "Of little worth" .)