Turn pale not having a dress (4)
I believe the answer is:
gown
'dress' is the definition.
(I know this)
'turn pale not having a' is the wordplay.
'turn' becomes 'go' (a person's move in a board game).
'pale' becomes 'wan' (wan can mean pale or grey).
'not having' suggests deleting specific letters.
'wan' with 'a' taken out is 'wn'.
'go'+'wn'='GOWN'
(Other definitions for gown that I've seen before include "Academic robe" , "Long formal dress" , "Academic (or evening) wear" , "Elegant dress" , "An evening dress" .)