monastic order

NOUN
14 LETTERS · STARTS WITH M

monastic order is a valid 14-letter word worth 18 points in Scrabble and 21 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
M3O1N1A1S1T1I1C3O1R1D2E1R1
3 + 1 + 1 + 1 + 1 + 1 + 1 + 3 + 0 + 1 + 1 + 2 + 1 + 1 =18 PTS
DOUBLE WORD → 36TRIPLE WORD → 54
MEANING

What does monastic order mean?