a noose made with a slipknot, so that it tightens when pulled
slipnoose in American English
(ˈslɪpˌnuːs)
noun
a noose with a knot that slides along the rope, thus forming a noose that tightens as the rope is pulled
Also: slip noose
Word origin
[1840–50; slip1 + noose]This word is first recorded in the period 1840–50. Other words that entered Englishat around the same time include: creationism, dope, layout, pylon, sensationalism