Stork with a grooved bill whose upper and lower parts touch only at the base and tip

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Openbill \O"pen*bill`\, n. (Zo["o]l.) A bird of the genus Anastomus , allied to the stork; -- so called because the two parts of the bill touch only at the base and tip. One species inhabits India, another Africa. Called also open-beak . See Illust. (m), ...

Wiktionary Word definitions in Wiktionary
n. Either of two species of bird in the genus ''Anastomus'' of the stork family Ciconiidae, with a distinctive gap between the mandibles of the closed bill.

WordNet Word definitions in WordNet
n. stork with a grooved bill whose upper and lower parts touch only at the base and tip