Dawn's direction (4)
I believe the answer is:
east
'dawn's direction' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for east that I've seen before include "Bearing of 90 degrees" , "Compass point at 90 degrees" , "Sunrise direction" , "bridge-player" , "Direction taken when going from the US towards Ireland" .)