Very light rain (7)
I believe the answer is:
drizzle
'very light rain' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for drizzle that I've seen before include "Very light rain, stronger than mist but less than a shower" , "Thin rain" , "Fine rain" , "Shed in fine drops" , "Rain gently" .)