Wand changed sunrise (4)
I believe the answer is:
'sunrise' is the definition.
('dawn' can be a synonym of 'sunrise')
'wand changed' is the wordplay.
'changed' indicates an anagram.
'wand' is an anagram of 'DAWN'.
(Other definitions for dawn that I've seen before include "Threshold" , "Cockcrow" , "Aurora was its goddess" , "Break of day" , "Sunrise" .)