Feature in Dulwich intriguing (4)
I believe the answer is:
chin
'feature' is the definition.
(chin is a kind of feature)
'in dulwich intriguing' is the wordplay.
'in' indicates the answer is hidden within the clue.
'CHIN' can be found hidden inside 'dulwich intriguing'.
(Other definitions for chin that I've seen before include "Front of lower jaw" , "Jutting part of lower jaw" , "Keep it up and be optimistic" , "Possible double feature?" , "Prominent feature" .)