noose
Concise Oxford English Dictionary © 2008 Oxford University Press:
noose/nuːs/
▶noun a loop with a running knot which tightens as the rope or wire is pulled, used especially to hang offenders or trap animals. ▶verb apply a noose to; catch with a noose.
■ form (a rope) into a noose.
– phrases
put one's head in a noose bring about one's own downfall.
put one's head in a noose bring about one's own downfall.
– origin ME: prob. via OFr. no(u)s from L. nodus ‘knot’.
'noose' also found in these Oxford entries:

