WordNet sense 1 (a fiercely vigilant and unpleasant woman):

tartar

WordNet sense 2 (a creature of Teutonic mythology; usually represented as breathing fire and having a reptilian body and sometimes wings):

firedrake

WordNet sense 3 (a faint constellation twisting around the north celestial pole and lying between Ursa Major and Cepheus):

Draco

WordNet sense 4 (any of several small tropical Asian lizards capable of gliding by spreading winglike membranes on each side of the body):

flying dragon, flying lizard