semirigid airship

17 LETTERS · STARTS WITH S

semirigid airship is a valid 17-letter word worth 25 points in Scrabble and 27 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1E1M3I1R1I1G2I1D2A1I1R1S1H4I1P3

1 + 1 + 3 + 1 + 1 + 1 + 2 + 1 + 2 + 0 + 1 + 1 + 1 + 1 + 4 + 1 + 3 =25 PTS

DOUBLE WORD → 50TRIPLE WORD → 75

MEANING

What does semirigid airship mean?