read-only storage

NOUN
17 LETTERS · STARTS WITH R

read-only storage is a valid 17-letter word worth 20 points in Scrabble and 22 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
R1E1A1D2-0O1N1L1Y4S1T1O1R1A1G2E1
1 + 1 + 1 + 2 + 0 + 1 + 1 + 1 + 4 + 0 + 1 + 1 + 1 + 1 + 1 + 2 + 1 =20 PTS
DOUBLE WORD → 40TRIPLE WORD → 60
MEANING

What does read-only storage mean?

NOUN · 1 SENSE