The cincture is a rope-like or ribbon-like article sometimes worn with certain Christian liturgical vestments, encircling the body around or above the waist.
As usual with vestments, both the term and the object are taken from ordinary everyday dress of the distant past.
Consecrated members of the various Eastern rites, whether in the Catholic Church, or in the various Orthodox communions, sometimes wear a belt referred to as a zone.
[1] In the Western rites of the Catholic Church, as a matter of customary terminology, the term cincture is most often applied to a long, rope-like cord with tasseled or knotted ends, tied around the waist outside the alb.
When the cincture is tied in the front and the ends draped on either side, it is called a Roman Knot.