vena labialis

NOUN
13 LETTERS · STARTS WITH V

vena labialis is a valid 13-letter word worth 17 points in Scrabble and 22 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
V4E1N1A1L1A1B3I1A1L1I1S1
4 + 1 + 1 + 1 + 0 + 1 + 1 + 3 + 1 + 1 + 1 + 1 + 1 =17 PTS
DOUBLE WORD → 34TRIPLE WORD → 51
MEANING

What does vena labialis mean?