Go-devil \Go"-dev"il\, n. (Mach.)
(a) A weight which is dropped into a bore, as of an oil well,
to explode a cartridge previously lowered.
(b) 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.
(c) A rough sled or dray used for dragging logs, hauling
stone, etc. [Local, U. S.]
[Webster 1913 Suppl.]