observation mine

16 LETTERS · STARTS WITH O

observation mine is a valid 16-letter word worth 22 points in Scrabble and 27 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

O1B3S1E1R1V4A1T1I1O1N1M3I1N1E1

1 + 3 + 1 + 1 + 1 + 4 + 1 + 1 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 1 =22 PTS

DOUBLE WORD → 44TRIPLE WORD → 66

MEANING

What does observation mine mean?