noun, plural i·bis·es, (especially collectively) i·bis.
- any of several large wading birds of the family Threskiornithidae, of warm temperate and tropical regions, related to the herons and storks, and characterized by a long, thin, downward-curved bill.Compare sacred ibis.
- any of certain similar birds belonging to the stork family Ciconiidae, especially the wood stork, Mycteria americana.
noun plural ibises or ibis
- any of various wading birds of the family Threskiornithidae, such as Threskiornis aethiopica (sacred ibis), that occur in warm regions and have a long thin down-curved bill: order Ciconiiformes (herons, storks, etc)Compare wood ibis
stork-like bird, late 14c., from Greek ibis, from Egyptian hab, a sacred bird of Egypt.