Film container (4)
'film container' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for can that I've seen before include "May" , "let go in the US" , "depth charge" , "has power" , "Vessel" .)
(Other definitions for reel that I've seen before include "Cylinder on which something is wound" , "Air" , "Film spool" , "Highland dance" , "Dance; winding drum" .)