Drops top off projectors (5)
I believe the answer is:
eaves
'top off projectors' is the definition.
'eaves' can be an answer for 'top' (thesaurus). I am not sure about the 'off projectors' bit.
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for eaves that I've seen before include "Projecting edge of a roof" , "Overhang at edge of a roof" , "Anything projecting" , "Roof projection" , "Overhanging part of roof" .)