will-o'-the-wisp

NOUN /,wiləðə'wisp/
16 LETTERS · STARTS WITH W

will-o'-the-wisp is a valid 16-letter word worth 23 points in Scrabble and 25 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
W4I1L1L1-0O1'0-0T1H4E1-0W4I1S1P3
4 + 1 + 1 + 1 + 0 + 1 + 0 + 0 + 1 + 4 + 1 + 0 + 4 + 1 + 1 + 3 =23 PTS
DOUBLE WORD → 46TRIPLE WORD → 69
MEANING

What does will-o'-the-wisp mean?

NOUN · 1 SENSE
1

A pale light sometimes seen at night over marshy ground.