Dawn drops (3)
I believe the answer is:
dew
'dawn drops' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for dew that I've seen before include "Early morning condensation" , "'The foggy, foggy - - ' (song)" , "Moisture on ground" , "Small drops of moisture" , "Night-time condensate" .)