Female spirit of Irish folklore, one with a terrible wail (7)

I believe the answer is:

banshee

(Other definitions for banshee that I've seen before include "Irish female spirit who warns of an impending death" , "Ominous wailing spirit" , "Portent of death" , "Wailing woman of Irish legend" , "'Wailing woman, warns of impending death (7)'" .)

I've seen this clue in The Guardian.

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