frigate bird

noun

1. any of several predacious seabirds of the genus Fregata, having fully webbed feet.

noun

1. any bird of the genus Fregata and family Fregatidae, of tropical and subtropical seas, having a long bill with a downturned tip, a wide wingspan, and a forked tail: order Pelecaniformes (pelicans, cormorants, etc)Also called: man-of-war bird