coccygeal vertebra(n = noun.body) caudal vertebra - one of 4 vertebrae in the human coccyx;
is a kind of vertebra
is a part of coccyx, tail bone

atlas vertebra, axis vertebra, caudal vertebra, cervical vertebra, coccygeal, coccygeal nerve, coccygeal plexus, dorsal vertebra, lumbar vertebra, sacral vertebra, thoracic vertebra, vertebra