As a Noun: 1. The framework of bones which supports and protects your organs and muscles. English = skeleton. 2. The curved bones that go from your backbone to your chest. English = ribs. 3. The structure of ribs in your chest. English = rib cage. As a Verb or Adjective: 1. To be extremely thin and weak because of illness or lack of food. English = (be) emaciated.