The type of material for adolescent fighting off cold (6)
I believe the answer is:
sateen
'fighting off cold' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.
'the type of material for adolescent' is the wordplay.
'the type of material for' becomes 'sa' (I can't explain this - if you can you should give a lot more credence to this answer).
'adolescent' becomes 'teen' (I've seen this before).
'sa'+'teen'='SATEEN'
Can you help me to learn more?
(Other definitions for sateen that I've seen before include "Shiny cloth used for furnishings" , "Sea net could provide a glossy fabric" , "Cotton fabric with a satiny finish" , "Shiny cloth found in senate" , "Cotton fabric with a shiny finish" .)