moa-nalo noun1 •Any of several extinct aberrant, goose-like ducks that lived on some islands of Hawaii from the late Pleistocene until sometime before 1778.All of the raptors would have exploited rails, young ibises, and perhaps young moa-nalos, although the eagle was the only one capable of taking adult ibises or moa-nalos. — 1994 formsmoa-nalos