Coarse pasture, good going for common (5)
I believe the answer is:
crass
'common' is the definition.
Both the answer and definition are adjectives. Perhaps there's an association between them I don't understand?
'coarse pasture good going' is the wordplay.
'coarse' becomes 'c' (this might be a standard abbreviation which I don't know about).
'pasture' becomes 'grass' (I've seen this before).
'good' becomes 'g' (abbreviation).
'going' indicates named letters should be taken away.
'grass' with 'g' taken out is 'rass'.
'c'+'rass'='CRASS'
'for' is the link.
Can you help me to learn more?
(Other definitions for crass that I've seen before include "Totally lacking in sensibility" , "Asinine" , "Blundering" , "Indelicate" , "Boorish about scars" .)