Hilda or Zelda, to Sabrina the Teenage Witch (4)

I believe the answer is:

aunt

(Other definitions for aunt that I've seen before include "Sister of father/mother" , "Tuna gone bad for the relative" , "Parent's female sibling" , "Tuna (anag.)" , "Uncle's wife" .)

I've seen this clue in The New York Times.

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