any of a genus (Pelecanus, family Pelecanidae) of pelecaniform birds with a distensible pouch which hangs from the large lower bill and is used to scoop up or store fish
See pelican in American Heritage Dictionary 4
(pĕlˈĭ-kən)
noun
Any of various large, web-footed birds of the genus Pelecanus of tropical and warm regions, having a long straight bill from which hangs a distensible pouch of skin for catching and holding fish.