noun (n)

• the narrowing of the body between the ribs and hips(noun.body)

  Synonym:
  waistline
  

  source: wordnet30
• the narrow part of the shoe connecting the heel and the wide part of the sole(noun.artifact)

  Synonym:
  shank
  

  source: wordnet30
• That part of the human body which is immediately below the ribs or thorax; the small part of the body between the thorax and hips.(noun)

  source: webster1913