the largest flatfish: a dark green North Atlantic species, Hippoglossus hippoglossus, that is a very important food fish: family Pleuronectidae
2.
any of several similar and related flatfishes, such as Reinhardtius hippoglossoides (Greenland halibut)
Word origin
C15: from haliholy (because it was eaten on holy days) + butte flat fish, from Middle Dutch butte
halibut in American English
(ˈhæləbət; also ˈhɑləbət)
nounWord forms: pluralˈhalibut or ˈhalibuts
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)
Word origin
ME halybutte < hali, holy + butt, a flounder (so called because eaten on holidays): see holy + butt1