Ekajata, also she who has but one chignon, in buddha mythology is the Buddhist (Varjayana) goddess of good fortune.
She gives happiness and removes personal obstacles. Occasionally one finds her attending the goddess Khadirayani-Tara. She is an emanation of Aksobhya and a form of Tara.
She mat have one or twelve heads. Her color is blue, and attributes are the arrow, ax, bell, blue lotus, book, bow, conch, cup, hook, image of Amitabha on the crown, knife, noose, skull, staff, sword, and tiger skin.
She is three-eyed. A.G.H.
Source:
Jordan, Michael, Encyclopedia of Gods, New York, Facts On File, Inc. 1993, p. 74