European oyster

noun
  1. a flat, edible oyster, Ostrea edulis, occurring throughout coastal waters of northern Europe and cultivated on northern U.S. coasts.
Also called be·lon [bey-lohn] /beɪˈloʊn/, flat oyster.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018