observation plane

17 LETTERS · STARTS WITH O

observation plane is a valid 17-letter word worth 23 points in Scrabble and 29 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

O1B3S1E1R1V4A1T1I1O1N1P3L1A1N1E1

1 + 3 + 1 + 1 + 1 + 4 + 1 + 1 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 1 + 1 =23 PTS

DOUBLE WORD → 46TRIPLE WORD → 69

MEANING

What does observation plane mean?