ver ‧ te ‧ bra /ˈvɜːtəbrə, ˈvɜːtɪbrə $ ˈvɜːr-/ BrE AmE noun ( plural vertebrae /-briː, -breɪ/) [countable]
[ Date: 1600-1700 ; Language: Latin ; Origin: 'joint, vertebra' , from vertere ; ⇨ ↑ verse ]
one of the small hollow bones down the centre of your back
—vertebral adjective [only before noun]