jackhole

plural jackholes

1. archaicbusinessA hole that is created using a jack or wedge.

   Finally, Spindrick came to a jackhole with the cover off and protected by a circular barrier.

   2011, Garry Kilworth, Gaslight Geezers

   4 more examples

   As soon as the machine is well under way, the runner determines about where the next rear jack-hole will come, and has the cut made and ready for receiving the jack by the time the machine has finished its cut.

   1907, Rock Boring, Rock Drilling, Explosives and Blasting, Coal-Cutting Machinery, Timbering, Timber trees, Trackwork, page 48

   Trout glided into the shadows, feeding upon grey moths, while in the jackhole beneath the red clay hollows big pike stirred lazily.

   1911, The Nation - Volume 9, page 906

   It was therefore decided to drive one jackhole through to the surface, and after passing through the inferior coal, the alluvium was met with, and found to be so light and loose in character that it ran through at this point to the surface. The jackhole had therefore to be abandoned, and no further attempts were made to pierce the strata.

   1913, Institution of Mining Engineers (Great Britain), The Mining Engineer, page 379

   The particular work he was doing when the accident occurred was digging with pick and shovel a jackhole under one of the track rails to prepare a foundation for a track-lifting implement.

   1927, Reports of cases determined in the district courts - Volume 74, page 22

plural jackholes

1. derogatoryhumorousslangAn obnoxious or contemptible person.

   Your competitive moon is eclipsing my happy place sun, jackhole.

   2017, Christina Lauren, Dating You, Hating You

   2 more examples

   Now I hear some of you jackholes want to sue Nancy...HA! good luck!

   2003, Nickolas, “Planet X Bull”, in sci.astro (Usenet)

   We came all this way, and the least you can do is stop being a jackhole for five seconds and listen.

   2019, Kim Chance, Seeker