𞋎𞋀𞋘𞋅𞋨𞋮

𞋀𞋅𞋁 𞋎𞋀𞋘𞋅𞋨𞋮 𞋔𞋁𞋫 𞋘𞋁𞋉𞋊𞋞𞋮

each of a series of slender curved bones articulated in pairs to the spine (twelve pairs in humans), protecting the thoracic cavity and its organs.