All 7 Uses

purgatory
in
Dante's Inferno
(Auto-generated)

The concave of Hell had been formed by his fall, when a portion of the solid earth, through fear of him, ran back to the southern uninhabited hemisphere, and formed there, directly antipodal to Jerusalem, the mountain of Purgatory which rose from the waste of waters that covered this half of the globe.†
Canto T.O.
Purgatory was shaped as a cone, of similar dimensions to that of Hell, amid at its summit was the Terrestrial Paradise.†
Canto T.O.
But Divine Grace, in the form of Beatrice, who had of old on earth led him aright, now intervened and sent to his aid Virgil, who, as the type of Human Reason, should bring him safe through Hell, showing to him the eternal consequences of sin, and then should conduct him, penitent, up the height of Purgatory, till on its summit, in the Earthly Paradise, Beatrice should appear once more to him.†
Canto T.O.
[1] [1] The boat that bears the souls to Purgatory†
Canto 1-3 *
The lord of Gomita was the gentle Judge Nino, whom Dante meets in Purgatory.†
Canto 22-24
[1] [1] This point is the centre of the universe; when Virgil had turned upon the haunch of Lucifer, the passage had been made from one hemisphere of the earth—the inhabited and known hemisphere—to the other where no living men dwell, and where the only land is the mountain of Purgatory†
Canto 31-34
[1] The Mount of Purgatory†
Canto 31-34

Definitions:

(1) (purgatory)
a place or state of temporary suffering while waiting

or in Roman Catholic theology: the place where those who have died in a state of grace undergo limited suffering to pay for their sins
(2) (meaning too rare to warrant focus)