1.One who practices the black art, or magic; one regarded as possessing supernatural or magical power by compact with an evil spirit, esp. with the Devil; a sorcerer or sorceress; now applied chiefly or only to women, but formerly used of men as well. "There was a man in that city whose name was Simon, a witch." "He can not abide the old woman of Brentford; he swears she's a witch."
2.An ugly old woman; a hag.
3.One who exercises more than common power of attraction; a charming or bewitching person; also, one given to mischief; said especially of a woman or child. (Colloq.)
4.(Geom.) A certain curve of the third order, described by Maria Agnesi under the name versiera.
5.(Zool.) The stormy petrel.
