Greenland halibut Syllabification: (Green·land hal·i·but)Definition of Greenland halibut noun an edible halibut with a black or dark brown upper side that is found in cold, deep waters of the north. Reinhardtius hippoglossoides, family Pleuronectidae Greenland halibut in other Oxford dictionaries Definition of Greenland halibut in the British & World English dictionary