A tea infuser is a convenient tool that tea lovers use to brew loose tea leaves. It's a small device, usually made of stainless steel, mesh, or silicone, that allows water to flow through the tea leaves while keeping them contained. However, there are several synonyms for the word "tea infuser" that you might come across. Some people call it a tea ball, a tea basket, or a tea strainer. Others refer to it as a tea steeper, a tea filter, or a tea holder. No matter what you call it, the tea infuser is an essential tool for brewing great tea and enjoying its deep flavors and aromas.