There is a great deal of mis-information regarding witches,
especially in media aimed at children (such as fairy
tales), witches are often depicted as wicked old women with
wrinkled skin and pointy hats, clothed in black or purple,
with warts on their noses and sometimes long claw-like
fingernails.
Like the three "Weird Sisters" from Macbeth, they are often
portrayed as concocting potions in large cauldrons. Witches
typically ride through the air on a broomstick as in the
Harry Potter universe or in more modern spoof versions, a
vacuum cleaner as in the Hocus Pocus universe. One of the
most famous recent depictions is the Wicked Witch of the
West, from L. Frank Baum's The Wonderful Wizard of Oz.