In Irish folklore, a "bean sidhe" (literally "woman of fairyland") was not a welcome guest. When she was seen combing her hair or heard wailing beneath a window, it was considered a sign that a family member was about to die. English speakers modified the mournful fairy's Irish name into the modern word banshee - a term we now most often use to evoke her woeful or terrible or earsplitting cry, as in "to scream like a banshee," or attributively, "a banshee wail."
1771, in the meaning defined above
Irish bean sídhe & Scottish Gaelic bean sìth, literally, woman of fairyland
Synonyms and Near Synonyms for banshee
Antonyms and Near Antonyms for banshee
banshee
noun