Lose ingot that’s to be melted down for coiner? (9)
I believe the answer is:
neologist
'down for coiner?' is the definition.
'neologist' can be an answer for 'coiner?' (I've seen this before). I'm not certain of the 'down for' bit.
'lose ingot that's to be melted' is the wordplay.
'that's to be melted' indicates an anagram.
'lose'+'ingot'='loseingot'
'loseingot' with letters rearranged gives 'NEOLOGIST'.
Can you help me to learn more?
(Other definitions for neologist that I've seen before include "Coiner" , "One coining new words" .)