noun / verb
rake
RAYK/reɪk/
To gather or move loose material with a toothed sweeping tool.
A garden rake rests beside a small pile of fallen leaves.

Etymology
Old English raca already named the toothed gathering tool. Its deeper origin may refer either to its gathering action or to the straight wooden pieces used in the implement.
In context
happening. It will scratch the surface and take away any dead material laying there, which is not thatch. So, this is dead grass, leaves, and stuff like that. So, you rake it up. So, it's a power driven rake.