Come down to scratch prominent feature? (8)
I believe the answer is:
landmark
'prominent feature?' is the definition.
'landmark' can be an answer for 'feature?' (I've seen this before). I'm not sure about the 'prominent' bit.
'come down to scratch' is the wordplay.
'come' becomes 'land' (landing is a kind of coming).
'down to' says to put letters next to each other (joining in a down clue).
'scratch' becomes 'mark' (synonyms).
'land'+'mark'='LANDMARK'
Can you help me to learn more?
(Other definitions for landmark that I've seen before include "Conspicuous feature" , "Notable geographical feature" , "Durham Cathedral, say" , "crucial point" , "Momentous event" .)