junk heap

NOUN /dʒəŋk_hip/
9 LETTERS · STARTS WITH J

junk heap is a valid 9-letter word worth 24 points in Scrabble and 28 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
J8U1N1K5H4E1A1P3
8 + 1 + 1 + 5 + 0 + 4 + 1 + 1 + 3 =24 PTS
DOUBLE WORD → 48TRIPLE WORD → 72
MEANING

What does junk heap mean?