intermediate pile

17 LETTERS · STARTS WITH I

intermediate pile is a valid 17-letter word worth 21 points in Scrabble and 25 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

I1N1T1E1R1M3E1D2I1A1T1E1P3I1L1E1

1 + 1 + 1 + 1 + 1 + 3 + 1 + 2 + 1 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 1 =21 PTS

DOUBLE WORD → 42TRIPLE WORD → 63

MEANING

What does intermediate pile mean?