a flexible, jointed apparatus forced through a pipeline to free it from obstructions.
a dart dropped into a well, especially an oil well, to explode a charge of dynamite or nitroglycerin previously placed in a desired position.
a sled used to drag or carry logs, stone, etc.
Also called sled cultivator. a cultivator that rides on wooden runners and is used on listed furrows.
Western U.S. any exceptionally fast or effective machine or appliance: That food processor is a real go-devil.