argillaceous rock

NOUN
17 LETTERS · STARTS WITH A

argillaceous rock is a valid 17-letter word worth 25 points in Scrabble and 31 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
A1R1G2I1L1L1A1C3E1O1U1S1R1O1C3K5
1 + 1 + 2 + 1 + 1 + 1 + 1 + 3 + 1 + 1 + 1 + 1 + 0 + 1 + 1 + 3 + 5 =25 PTS
DOUBLE WORD → 50TRIPLE WORD → 75
MEANING

What does argillaceous rock mean?

NOUN · 1 SENSE
1

A sedimentary rock formed from clay deposits.