mash·er I. \ˈmashə(r), -aash-, -aish-\noun (-s) Etymology:mash (II) + -er : one that mashes: a.: a brewery worker who mixes and cooks mash b.: a kitchen utensil for mashing food < a potato masher > II. noun (-s) Etymology:mash (V) + -er : a man who makes amorous advances especially to a strange woman : wolf, flirt < was a born masher — Dixon Wecter > < a young masher who is forced into marriage — John McCarten >