It dispenses liquid in a fine spray (7)
I believe the answer is:
aerosol
'it dispenses liquid in a fine spray' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for aerosol that I've seen before include "Air-spray" , "Spray creator" , "Pressurised container releasing fine spray" , "Sprayer" , "Atomiser" .)