debris

debris [ duh'-BREE or especially Brit., DEB-ree ]
[ noun ]

MEANING :
1. wreckage, ruins, rubble or the remains of anything broken down
2. an accumulation of loose rock fragments
3. litter or carelessly discarded refuse

USAGE EXAMPLE 1 :
The road was blocked with debris from the building that had collapsed.
USAGE EXAMPLE 2 :
The report pointed out that on or below every square mile of our ocean, there were 46,000 pieces of floating marine debris and that the problem was particularly acute in certain areas.