world line

10 LETTERS · STARTS WITH W

world line is a valid 10-letter word worth 13 points in Scrabble and 16 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

W4O1R1L1D2L1I1N1E1

4 + 1 + 1 + 1 + 2 + 0 + 1 + 1 + 1 + 1 =13 PTS

DOUBLE WORD → 26TRIPLE WORD → 39

MEANING

What does world line mean?