Paper-cutting device (8)
(Other definitions for shredder that I've seen before include "security equipment" , "Paper-cutter" , "destroyer of sensitive material" , "Document destroyer" , "destroyer of confidential material" .)
(Other definitions for guillotine that I've seen before include "revolutionary chopper" , "Device for parting head from shoulders" , "Paper trimmer" , "Top" , "Beheading machine" .)