doggy bag

Alternative forms

• doggie bag

Etymology

doggy +‎ bag. In the food sense, this refers to the idea that the food is to be taken home for the diner's dog.

Noun

doggy bag (plural doggy bags)

1. A bag (or other container) used to take home uneaten food from a restaurant meal.
2. A bag used to pick up the droppings of dogs in parks and public places.