Cartilage

n.
  1. A translucent, elastic tissue; gristle.
    2. Articular cartilage ,
    cartilage that lines the joints.
    Cartilage bone (Anat.),
    any bone formed by the ossification of cartilage.
    Costal cartilage ,
    cartilage joining a rib with he sternum. See Illust. of Thorax.