Pronunciation: (hal'u-but, hol'-), [key]
—pl. (esp. collectively) -but, (esp. referring to two or more kinds or species) -buts.
1. either of two large flatfishes, Hippoglossus hippoglossus, of the North Atlantic, or H. stenolepis, of the North Pacific, used for food.
2. any of various other similar flatfishes. Also,holibut.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.