| the enclosure formed by the ribs and their connecting bones. |

| rib cage n. The enclosing structure formed by the ribs and the bones to which they are attached. |
rib cage n.
The enclosing structure formed by the ribs and the bones to which they are attached.
| rib cage
The bony structure in the chest formed by the ribs and sternum (breastbone) that encloses and protects the heart and lungs. |