dead reckoning

NOUN
14 LETTERS · 3 SYLLABLES · STARTS WITH D

dead reckoning is a valid 14-letter word worth 22 points in Scrabble and 26 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
D2E1A1D2R1E1C3K5O1N1I1N1G2
2 + 1 + 1 + 2 + 0 + 1 + 1 + 3 + 5 + 1 + 1 + 1 + 1 + 2 =22 PTS
DOUBLE WORD → 44TRIPLE WORD → 66
MEANING

What does dead reckoning mean?

NOUN · 1 SENSE
1

An estimate based on little or no information.