A species of fish (including flounder, halibut and sole) characterized by a rather flat body, with both eyes located on the upper side. Flatfish swim on one side only; the side facing downwards is always very pale. See also brill; dab; fish; sand dab; turbot.
From The Food Lover's Companion, Fourth edition by Sharon Tyler Herbst and Ron Herbst. Copyright © 2007, 2001, 1995, 1990 by Barron's Educational Series, Inc.