lunar calendar

NOUN
14 LETTERS · STARTS WITH L

lunar calendar is a valid 14-letter word worth 16 points in Scrabble and 22 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
L1U1N1A1R1C3A1L1E1N1D2A1R1
1 + 1 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 1 + 1 + 2 + 1 + 1 =16 PTS
DOUBLE WORD → 32TRIPLE WORD → 48
MEANING

What does lunar calendar mean?