a person, esp. a woman, having supernatural power as by a compact with the devil or evil spirits; sorceress
an ugly and ill-tempered old woman; hag; crone
a practitioner or follower of white magic or of Wicca
Informal a bewitching or fascinating woman or girl
☆ water witch (sense )
Origin:
ME wicche < OE wicce, fem. of wicca, sorcerer, akin to MDu wicken, to use magic < IE base *weik-, to separate (hence set aside for religious worship) > Goth weihs, holy, OE wig, idol