What Does “Hermitage” Mean in the Bible?

A remote place where a hermit lives alone, devoted to prayer.

It can mean

The hermit: lives apart, in silence and solitude, with prayer and penance, to praise God and to pray for the world.
In the Bible: Jesus went out very early in the morning to a deserted place and prayed there. At other times he spent the night praying on a mountain.

Mark 1:35; Luke 6:12; Luke 5:16

Mark 1:35

And rising very early, going out, he went into a desert place: and there he prayed.

Luke 6:12

And it came to pass in those days, that he went out into a mountain to pray, and he passed the whole night in the prayer of God.

Luke 5:16

And he retired into the desert, and prayed.

Douay-Rheims Bible (Challoner revision), public domain.

Source: Catechism 920-921