noose 
(n
s)
n.1. A loop formed in a rope by means of a slipknot so that it binds tighter as the rope is pulled. Also called running noose.
2. A snare or trap.
tr.v. noosed,
noos·ing,
noos·es 1. To capture or hold by or as if by a noose.
2. To make a noose of or in.
[Middle English nose, probably from Old French nos, nous, knot, from Latin nōdus; see NODE.]