1912, Sir Arthur Conan Doyle, The Lost World, But above, perched each upon its own stone, tall, gray, and withered, more like dead and dried specimens than actual living creatures, sat the horrible males, absolutely motionless save for the rolling of their red eyes or an occasional snap of their rat-trap beaks as a dragon-fly went past them.
2000, Lee Marcus, Screw Your Courage, Everyone says he's got a rat trap mind.
Of the mouth, resembling a rat trap; large and ugly.
2001, John Harris, Picture Of Defeat, He smiled, his wide rat-trap mouth splitting to show bad teeth.
