A covered container refers to a receptacle that has an enclosure or covering, usually made from materials such as glass, plastic, metal or ceramic. The purpose of this cover is to protect the contents within and keep them safe from contaminants, damage or loss due to environmental factors like dust, moisture, insects or tampering.
The term "covered container" can be used in a variety of contexts such as referring to storage containers for food items, plant pots, waste bins, chemical bottles and many others. The type of material used for the cover may also vary depending on the intended use - for example, some covers are made from clear materials so that their contents can be easily viewed while others have opaque or tinted covers to protect against UV rays or other environmental factors.
In summary, a covered container is any receptacle with an enclosure designed to keep its contents safe and protected from harm.