noun Download 🔗Share Any of various birds of the family Bucerotidae, with bills resembling a cow's horn. Many species have a casque above the bill, and many imprison their young in a tree. Examples : "While hiking in the rainforest, we were lucky enough to spot a hornbill with its large, curved bill and the female sealed inside a tree cavity, protecting her chicks. " animal bird biology nature organism Chat with AIVocabulary GamePractice Reading