Thermos in the context of "Tub (container)"

A tub is an open-top circular or oblong container. In earlier times they were made from wooden staves held together with iron hoops and were made by coopers. Modern tubs used in industry might be made from concrete, metal or plastic.

Small plastic tubs used in the home may have a separate or attached snap-on lid or cover; some tubs may have latched lids.