erinnys

from The Collaborative International Dictionary of English v.0.48

Erinys \E*rin"ys\, n.; pl. {Erinyes}. [L., fr. Gr. ?.] (Class.
   Myth.)
   An avenging deity; one of the Furies; sometimes, conscience
   personified. [Written also {Erinnys}.]
   [1913 Webster]