principal idea

14 LETTERS · STARTS WITH P

principal idea is a valid 14-letter word worth 20 points in Scrabble and 25 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

P3R1I1N1C3I1P3A1L1I1D2E1A1

3 + 1 + 1 + 1 + 3 + 1 + 3 + 1 + 1 + 0 + 1 + 2 + 1 + 1 =20 PTS

DOUBLE WORD → 40TRIPLE WORD → 60

MEANING

What does principal idea mean?