An explosive cartridge or shell lowered or dropped into a bored oil well, and there exploded, to clear the well of obstructions or to open communication with a source of supply of oil
A streamlined metal block placed in the path of flow of the plastic material in the heating cylinder of the extruder to speed it into thin layers, thus forcing it into intimate contact with the heating areas
{f} attack with a torpedo; damage with a torpedo; undermine, sabotage, destroy, subvert; detonate an explosive device inside an oil well in order to facilitate the extraction of oil
any sluggish bottom-dwelling ray of the order Torpediniformes having a rounded body and electric organs on each side of the head capable of emitting strong electric discharges
{i} self-propelled underwater missile launched from a submarine or boat; (Zoology) fish that has electric organs and is able to give electrical shock from its organs and enlarged pectoral (lives in tropical or temperate seas), crampfish, electric ray, numbfish, electrical fish