kagu (?k???u?) n (Animals) a crested nocturnal bird, Rhynochetos jubatus, with a red bill and greyish plumage: occurs only in New Caledonia and is nearly extinct: family Rhynochetidae, order Gruiformes (cranes, rails, etc)[native name in New Caledonia]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014