shallow structure

17 LETTERS · STARTS WITH S

shallow structure is a valid 17-letter word worth 24 points in Scrabble and 28 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1H4A1L1L1O1W4S1T1R1U1C3T1U1R1E1

1 + 4 + 1 + 1 + 1 + 1 + 4 + 0 + 1 + 1 + 1 + 1 + 3 + 1 + 1 + 1 + 1 =24 PTS

DOUBLE WORD → 48TRIPLE WORD → 72

MEANING

What does shallow structure mean?