lawnmower UK /ˈlɔːn.məʊ.ə/US /ˈlɔn.moʊ.ɚ/ noun3 •A device used for cutting grass to a chosen height, typically of landscaped lawns of residences or institutions.We replaced our old electric lawnmower with a new cordless one. •A dance move in which the dancer mimics using a petrol lawn mower by pulling the starter cord and then pushing the mower forwards to the beat of the music. •A person who landscapes and in particular mows lawns.We hired a third lawnmower for the spring and summer. formslawnmowers