hash brown noun2 •A single piece of hash browns (finely chopped, fried potatoes); singular of hash browns.He plucked a hash brown from her chest and popped it in her mouth before slurping several more into his mouth. — 2010 •A fried patty made from finely chopped, diced or riced bits of potato.A Florida middle school civics teacher who was arrested Saturday for misdemeanor battery denied she threw a hash brown at a McDonalds^([sic]) employee. — 2011 formshash browns