the collective trade name for a type of plastic food-storage container with a translucent bottom and a close-fitting lid designed to seal the container tightly. It is in common use in the late 20th century and early 21st century in the U. S. It comes in a variety of shapes and sizes, suitable for storing a variety of items. Also used attributively.

Tupperware is the brand name of a home products line that includes preparation, storage, and serving products for kitchen and home. The brand debuted in 1946, and products are developed, manufactured, and internationally distributed by its parent company Tupperware Brands Corporation and marketed by means of direct selling through an independent sales force of approximately 1.9 million. Tupperware is a wholly owned subsidiary of Tupperware Brands Corporation.

An imitative term used to describe having two pair.