retreat
noun
1.
(military) withdrawal of troops to a more favorable position to escape the enemy's superior forces or after a defeat
2.
a place of privacy; a place affording peace and quiet
Derived from:
retreat 3.
(military) a signal to begin a withdrawal from a dangerous position
4.
(military) a bugle call signaling the lowering of the flag at sunset
6.
withdrawal for prayer and study and meditation