any of several large wading birds (family Threskiornithidae) with long legs and a long, slender, curved bill, found chiefly in tropical regions, as the sacred ibis of the Nile (Threskiornis aethiopica)
Any of various storklike wading birds of the family Threskiornithidae of temperate and tropical regions, having a long, slender, downward-curving bill.