trash dump

NOUN
10 LETTERS · STARTS WITH T

trash dump is a valid 10-letter word worth 17 points in Scrabble and 19 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
T1R1A1S1H4D2U1M3P3
1 + 1 + 1 + 1 + 4 + 0 + 2 + 1 + 3 + 3 =17 PTS
DOUBLE WORD → 34TRIPLE WORD → 51
MEANING

What does trash dump mean?