capping plane

13 LETTERS · STARTS WITH C

capping plane is a valid 13-letter word worth 21 points in Scrabble and 29 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

C3A1P3P3I1N1G2P3L1A1N1E1

3 + 1 + 3 + 3 + 1 + 1 + 2 + 0 + 3 + 1 + 1 + 1 + 1 =21 PTS

DOUBLE WORD → 42TRIPLE WORD → 63

MEANING

What does capping plane mean?