E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Tartaros (Greek), Tartarus (Latin).
That part of the infernal regions where the wicked are punished. (Classic mythology.)
The word Hell occurs seventeen times in the English version of the New Testament. In seven of these the original Greek is Gehenna, in nine Hads, and in one instance it is Tartaros (2 Peter ii. 4) ε ooυ εε. It is a very great pity that the three words are translated alike, especially as Gehenna and Hads are not synonymous, nor should either be confounded with Tartarus. The Anglo-Saxon verb hél-an means to cover, hence hell = the grave or Hads.