Outline a new house title (10)
I believe the answer is:
silhouette
'outline' is the definition.
(I know that silhouette is a type of outline)
'a new house title' is the wordplay.
'a new' indicates anagramming the letters.
'house'+'title'='housetitle'
'housetitle' with letters rearranged gives 'SILHOUETTE'.
(Other definitions for silhouette that I've seen before include "Profile of characters" , "image" , "Outline representation" , "Shadowy outline" , "Outline figure" .)