Cush Syllabification: (Cush)Pronunciation: /ko͝oSH/Definition of Cush 1(in the Bible) the eldest son of Ham and grandson of Noah (Gen. 10:6). 2the southern part of ancient Nubia, first mentioned in Egyptian records of the Middle Kingdom. In the Bible it is the country of the descendants of Cush. Cush in other Oxford dictionaries Definition of Cush in the British & World English dictionary