From the September issue of The Writer's Life
A literary device is a technique writers use to produce a special effect in their writing. Nick Canepa, sports columnist for the San Diego Union-Tribune, uses colorful devices in his column, especially Aug.15th regarding doping in sports. He writes doping is “unchecked because the checkers can’t check enough”; “We are America the beautiful, but hardly America the innocent” ; the network doesn’t question because it doesn’t “need any slime on its bread and butter.”
See http://literarydevices.net/ to see more on literary devices.