Mrs. Krabappel's first name on "The Simpsons" (4)
I believe the answer is:
edna
(Other definitions for edna that I've seen before include "Girl's name; Dane (anag.)" , ". . . . O'Brien, ... Saint Vincent Millay" , "- O'Brien, Ir. novelist" , "___ O'Brien, Irish novelist, b. 1930" , "Female name" .)