英语释义
1. a Halloween practice in which children wearing costumes go from door to door in a neighborhood saying "trick or treat" when a door is opened to ask for treats with the implied threat of playing tricks on those who refuse
… a whimsical 1951 Saturday Evening Post cover on which costumed children are surprised by a disguised adult who opens the door for trick-or-treat.
— Antiques and The Arts Weekly
2. a custom on Halloween in which children knock on people's doors and say "trick or treat" when the doors are opened to ask for candy
3. a children's Halloween practice of going around usually in costume asking for treats