false bottom

NOUN
12 LETTERS · STARTS WITH F

false bottom is a valid 12-letter word worth 18 points in Scrabble and 21 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
F4A1L1S1E1B3O1T1T1O1M3
4 + 1 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 1 + 1 + 3 =18 PTS
DOUBLE WORD → 36TRIPLE WORD → 54
MEANING

What does false bottom mean?

NOUN · 1 SENSE
1

A horizontal structure that partitions a ship or box (especially one built close to the actual bottom).