Igloos men constructed for new usage (9)
I believe the answer is:
neologism
'new usage' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Maybe you can see an association between them that I don't see?
'igloos men constructed' is the wordplay.
'constructed' is an anagram indicator.
'igloos'+'men'='igloosmen'
'igloosmen' anagrammed gives 'NEOLOGISM'.
'for' is the link.
Can you help me to learn more?
(Other definitions for neologism that I've seen before include "new term" , "Brexit maybe" , "Newly-coined word or expression" , "Newly coined word" , "coinage" .)