1) Masher 
A compactor is a machine or mechanism used to reduce the size of waste material or soil through compaction. A trash compactor is often used by a home or business to reduce the volume of trash. Normally powered by hydraulics, compactors take many shapes and sizes. In landfill sites for example, a large bulldozer with spiked wheels called a landfill...
Equipment that densifies recyclable material and contains it under pressure, not allowing it to expand until it is unloaded.
A compactor is a device which crushes and compresses rubbish into small and convenient parcels.
an appliance that crushes and compresses trash into small convenient bundles.