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Meaning of duchess potatoes

duch'ess pota'toes

Pronunciation: [key]
  1. mashed potatoes mixed with cream, eggs, butter, and seasonings, piped onto a baking sheet or platter, sprinkled with grated cheese, and browned in the oven.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.