sheathbill Syllabification: (sheath·bill)Pronunciation: /ˈSHēTHˌbil/Definition of sheathbill noun a mainly white pigeonlike bird with a horny sheath around the base of the bill, breeding on the coasts of sub-Antarctic islands and feeding by scavenging. Family Chionididae and genus Chionis: two species sheathbill in other Oxford dictionaries Definition of sheathbill in the British & World English dictionary
