long primer

11 LETTERS · STARTS WITH L

long primer is a valid 11-letter word worth 15 points in Scrabble and 20 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

L1O1N1G2P3R1I1M3E1R1

1 + 1 + 1 + 2 + 0 + 3 + 1 + 1 + 3 + 1 + 1 =15 PTS

DOUBLE WORD → 30TRIPLE WORD → 45

MEANING

What does long primer mean?