Want curtains with bit of red lining? (6)
I believe the answer is:
dearth
'want' is the definition.
(dearth is a kind of want)
'curtains with bit of red lining?' is the wordplay.
'curtains' becomes 'death' (I've seen this before).
'with' means one lot of letters goes inside another.
'bit of red lining?' becomes 'r' (I can't justify this - if you can you should give a lot more credence to this answer).
'death' going around 'r' is 'DEARTH'.
(Other definitions for dearth that I've seen before include "Scarcity - lack" , "Hatred (anag) -- shortage" , "From shortage of food" , "Scarcity, paucity" , "deficiency" .)