pl. -·but or -·buts
any of a genus (Hippoglossus, family Pleuronectidae) of large, edible flounders found in northern seas, esp. the Atlantic species (H. hippoglossus), which may exceed 45 kg (c. 100 lb)
Origin of halibutMiddle English halybutte ; from hali, holy + butt, a flounder (so called because eaten on holidays): see holy + butt
nounpl. halibut or hal·i·buts
Any of several large edible flatfishes of the genus Hippoglossus and related genera, of northern Atlantic or Pacific waters.
Origin of halibutMiddle English : hali, holi, holy (from its being eaten on holy days); see holy + butte, flatfish (from Middle Dutch; see bhau- in Indo-European roots).
(plural halibuts or halibut)
From Middle English haly (“holy”) + obsolete butt (“flatfish”), since the fish was often eaten on holy days.