A / ā^tlantĭon
noun greek

ā^tlantĭon

gen. ii · gender neuter · decl. 2nd
the lowest vertebra of the neck
the lowest vertebra of the neck (so called because on it rests the whole burden of the head and the remaining vertebrae of the neck): hunc spinae articulum sive nodum Atlantion vocant, Plin. 28, 8, 27, § 99.