It's shown on a projector (5)
I believe the answer is:
slide
'it's shown on a projector' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for slide that I've seen before include "Make mild fun of" , "Transparency" , "Microscope glass" , "Playground structure" , "Slip, slither, skid" .)