"Takeout containers" refer to the disposable boxes, bags, or packaging that are used to carry food or drinks from a restaurant or food establishment to be enjoyed at another location. Full definition
With my chinese takeout container in hand I go home and cook up some vegetables. (101cookbooks.com)
Sitting on my desk, right next to my keyboard, is a small Styrofoam takeout container filled with fiery chili oil, tiny nuggets of salty - crunchy pickled turnips, sour black vinegar, fragrant cilantro — all the outsize flavors that have made Xi'an Famous Foods, which serves the cuisine of western China from several small outlets in New York City, an equally outsize hit. (bonappetit.com)
Recycling and reusing are good for the environment, but you shouldn't use plastic takeout containers from restaurants and grocery stores, old margarine tubs or polystyrene boxes to reheat leftovers, according to the USDA Food Safety and Inspection Service. (articles.chicagotribune.com)