sunken part

11 LETTERS · STARTS WITH S

sunken part is a valid 11-letter word worth 16 points in Scrabble and 20 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1U1N1K5E1N1P3A1R1T1

1 + 1 + 1 + 5 + 1 + 1 + 0 + 3 + 1 + 1 + 1 =16 PTS

DOUBLE WORD → 32TRIPLE WORD → 48

MEANING

What does sunken part mean?