from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of various tropical Old World birds of the family Bucerotidae, having a very large bill often surmounted by an enlarged protuberance at the base.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. 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.
from the GNU version of the Collaborative International Dictionary of English
- n. Any bird of the family Bucerotidæ, of which about sixty species are known, belonging to numerous genera. They inhabit the tropical parts of Asia, Africa, and the East Indies, and are remarkable for having a more or less horn-like protuberance, which is usually large and hollow and is situated on the upper side of the beak. The size of the hornbill varies from that of a pigeon to that of a raven, or even larger. They feed chiefly upon fruit, but some species eat dead animals.
from The Century Dictionary and Cyclopedia
- n. A large non-passerine bird of the family Bucerotidæ: so called from the horny casque, in some cases of enormous size, which surmounts the bill.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. bird of tropical Africa and Asia having a very large bill surmounted by a bony protuberance; related to kingfishers
In terms of casque morphology, the most strongly modified hornbill is the Helmeted hornbill Rhinoplax vigil, a territorial fig specialist of SE Asia.
There is an African bird called the hornbill, whose habits are in some respects a model.
The hornbill is a double-beaked bird that makes for a unique sight.
 This bird, often called a "hornbill" by foreigners in the
He stated that the bird in the tree was called by the Feringhees a "hornbill," but it was also known to some as the "rhinoceros bird."
European Pressphoto Agency The festival takes its name from the hornbill, a bird, a recurring theme in local folklore.
Diptendu Dutta/Agence France-Presse/Getty Images A Nishi tribesman wore a traditional hornbill cap as he queued to vote at a polling station in Itanagar, Arunachal Pradesh, Oct.13, 2009.
Joan rode on among the avenues of young cocoanut-palms, saw a hornbill, followed it in its erratic flights to the high forest on the edge of the plantation, heard the cooing of wild pigeons and located them in the deeper woods, followed the fresh trail of a wild pig for a distance, circled back, and took the narrow path for the bungalow that ran through twenty acres of uncleared cane.
African red-billed hornbill Tockus erythrorhyncus is recorded.
Grey hornbill Tockus birostris and Marshall's iora Aegithina nigrolutea are also present.