noun (n)

• a band of material around the waist that strengthens a skirt or trousers(noun.artifact)

  Synonym:
  cincture, girdle, sash, waistcloth
  

  source: wordnet30
• The band which encompasses the waist; esp., one on the upper part of breeches, trousers, pantaloons, skirts, or the like.(noun)

  source: webster1913