A sink strainer is a useful tool that helps prevent food particles and other debris from entering the drain and causing blockages. However, there are several other names used to describe this product depending on where you are in the world. In the UK, it's often referred to as a waste strainer, while in Australia, it's called a plug or a basket strainer. Some people also use the term sink filter or sink basket to describe this item. No matter what you call it, a sink strainer is an essential tool that helps keep your sink clean and in good working condition.