What is the meaning of Vertebra?

Any of the bony or cartilaginous segments which make up the backbone, consisting in some lower vertebrates of several distinct elements which never become united, and in higher vertebrates having a short more or less cylindrical body whose ends articulate by pads of elastic or cartilaginous tissue with those of adjacent vertebrae and a bony arch that encloses the spinal cord.

vertebrate

backbone, spinal column, spine, vertebral column

vertebra

vertebra

vertebra

a joint

a joint, vertebra of the spine

nominative/accusative/vocative plural of vertebrum

inflection of vertebrar:

1. third-person singular present indicative
2. second-person singular imperative

third-person singular present indicative

second-person singular imperative

Source: wiktionary.org