expansion sleeve

16 LETTERS · STARTS WITH E

expansion sleeve is a valid 16-letter word worth 27 points in Scrabble and 32 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

E1X8P3A1N1S1I1O1N1S1L1E1E1V4E1

1 + 8 + 3 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 1 + 4 + 1 =27 PTS

DOUBLE WORD → 54TRIPLE WORD → 81

MEANING

What does expansion sleeve mean?