an ending of a story or play, etc., that employs a surprise element or character to resolve the plot.
Why Do We Say “Trick or Treat”?It's many kids' favorite part of Halloween. There’s no feeling quite like waiting for a stranger to open their door so you can scream the words "Trick or treat"! But, why do we say it? What does it actually mean?
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019