trick-or-treating
The practice of going house to house on Halloween evening to receive treatsThe practice of going house to house on Halloween evening to receive treats.
Meaning
1 senses(uncountable)The practice of going house to house on Halloween evening to receive treats.
Origin
From trick-or-treat + -ing.From trick-or-treat + -ing.
Wiktionary, CC BY-SA 4.0 · source
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable