Go-devil

·add. ·noun A rough sled or dray used for dragging logs, hauling stone, ·etc.

II. Go-devil ·add. ·noun A weight which is dropped into a bore, as of an oil well, to explode a cartridge previously lowered.

III. Go-devil ·add. ·noun A device, as a loosely fitted plug, which is driven through a pipe by the pressure of the contents behind the plug to clear away obstructions.