Grass-cutting machine (5)
(Other definitions for mower that I've seen before include "Gardening equipment" , "Grass-cutter" , "Tool for cutting grass" , "Patrick _; Rodney Blackstock in Emmerdale" , "Machine for cutting grass" .)
(Other definitions for lawnmower that I've seen before include "Grass-cutter" , "It has blades for cutting blades!" , "cutting equipment" , "Grass cutter" .)