Monastic

1. Of, relating to, or characteristic of a monastery. Used often of monks and nuns.
2. Resembling life in a monastery in style, structure, or manner, especially:
a. Secluded and contemplative.
b. Strictly disciplined or regimented.
c. Self-abnegating; austere.

1.
of or pertaining to monasteries: a monastic library.
2.
of, pertaining to, or characteristic of monks or nuns, their manner of life, or their religious obligations: monastic vows.
3.
of, pertaining to, or characteristic of a secluded, dedicated, or austere manner of living.
noun
4.
a member of a monastic community or order, especially a monk.

Source

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