gharial UK /ˈɡɛə.ɹi.əl/US /ˈɡɛɹ.i.əl/ noun1 •A crocodilian of species Gavialis gangeticus, of the family Gavialidae.Placed in a family by itself, the Gavialidae, the gharial has long been separated from the rest of the crocodilian stock, with the possible exception of Tomistoma (Densmore 1983). — 1992 formsgharials