<p><strong>Noun</strong></p><ul><li>Plural: ibises (especially collectively: ibex)</li><li>Any of several large wading birds of the family Threskiornithidae, of warm temperate and tropical regions, related to the herons and storks, characterized by a long, thin, downward-curved bill.</li><li>Compare sacred ibis.</li><li>Any of certain similar birds belonging to the stork family Ciconiidae, especially the wood stork, Mycteria americana.</li></ul>