noun

• (derogatory) An ugly old woman.
  "The elder women were literally "old hags" - lean and shrivelled, and excessively ugly."
• (derogatory) An evil woman.
  "I don't plan to stop drinking. But... I don't wanna forget. I can't turn away anymore. So, if I'm gonna die, well, it might as well be driving my sword through the heart of that murderous hag."
• (US, slang) A woman over the age of 30 years.
  "– What is that hag trend that is going on?"
• (obsolete) An appearance of light and fire on a horse's mane or a person's hair.
  "Flamma lambentes (or those we call Haggs) are made of Sweat or some other Vapour issuing out of the Head; a not-unusuall sight amongst us when we ride by night in the Summer time: They are extinguisht, like flames, by shaking the Horse Mains"

noun

• (Northern England) A small wood, or part of a wood or copse, which is marked off or enclosed for felling, or which has been felled.
  "This said, he led me over hoults and hags; / Through thorns and bushes scant my legs I drew"

verb

• (transitive) To harass; to weary with vexation.
  "How are Superstitious Men Hagg'd Out of their Wits and Senses, with the Fancy of Omens, Forebodings, Old Wives Tales, and Visions"