the evening of October 31st; the eve of All Saint's Day; Halloween: observed esp. by children in costumes who solicit treats, often by threatening minor pranks.
Dracula wine from Romania, to enjoy...
Eye of newt, and toe of frog,
Wool of bat, and tongue of dog,
Adder's fork, and blind-worm's sting,
Lizard's leg, and owlet's wing,
For a charm of powerful trouble,
Like a hell-broth boil and bubble.