Throwing something on the ground (8)
I believe the answer is:
flooring
'the ground' is the definition.
(thesaurus)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for flooring that I've seen before include "Baffling completely, knocking down" , "Carpet or lino, say" , "Material for walking on" , "platform" , "Bewildering" .)