doggy bag

noun

1. a small bag provided on request by a restaurant for a customer to carry home leftovers of a meal, ostensibly to feed a dog or other pet.

doggy bag

noun

1. a bag into which leftovers from a meal may be put and taken away, supposedly for the diner's dog

Word History and Origins

Origin of doggy bag¹

An Americanism dating back to 1965–70