Hanging Gardens of Babylon Syllabification: (Hang·ing Gar·dens of Bab·y·lon)Definition of Hanging Gardens of Babylon legendary terraced gardens at Babylon, watered by pumps from the Euphrates, whose construction was ascribed to Nebuchadnezzar (circa 600 bc). They were one of the Seven Wonders of the World. Hanging Gardens of Babylon in other Oxford dictionaries Definition of Hanging Gardens of Babylon in the British & World English dictionary